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Finding the Fourth Proportional to 14,969.40, 22,429.80 and 9,412.80

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Solution

The fourth proportional to 14,969.40, 22,429.80 and 9,412.80 is: 14,103.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,969.40 : 22,429.80 = 9,412.80 : x
  2. Step 2: Convert to fraction form
    14,969.40/22,429.80 = 9,412.80/x
  3. Step 3: Cross multiply
    14,969.40x = 22,429.80 × 9,412.80
  4. Step 4: Simplify right side
    14,969.40x = 211,127,221.44
  5. Step 5: Solve for x
    x = 211,127,221.44/14,969.40
  6. Step 6: Final answer
    x = 14,103.92

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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.