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Finding the Fourth Proportional to 9,688.40, 14,554.20 and 9,429.20

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Solution

The fourth proportional to 9,688.40, 14,554.20 and 9,429.20 is: 14,164.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,688.40 : 14,554.20 = 9,429.20 : x
  2. Step 2: Convert to fraction form
    9,688.40/14,554.20 = 9,429.20/x
  3. Step 3: Cross multiply
    9,688.40x = 14,554.20 × 9,429.20
  4. Step 4: Simplify right side
    9,688.40x = 137,234,462.64
  5. Step 5: Solve for x
    x = 137,234,462.64/9,688.40
  6. Step 6: Final answer
    x = 14,164.82

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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.