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Finding the Fourth Proportional to 9,416.80, 14,141.40 and 9,125.20

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Solution

The fourth proportional to 9,416.80, 14,141.40 and 9,125.20 is: 13,703.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,416.80 : 14,141.40 = 9,125.20 : x
  2. Step 2: Convert to fraction form
    9,416.80/14,141.40 = 9,125.20/x
  3. Step 3: Cross multiply
    9,416.80x = 14,141.40 × 9,125.20
  4. Step 4: Simplify right side
    9,416.80x = 129,043,103.28
  5. Step 5: Solve for x
    x = 129,043,103.28/9,416.80
  6. Step 6: Final answer
    x = 13,703.50

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Half scale
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Double scale
Find fourth proportional to 9,417.80, 14,142.90 and 9,126.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.