Home / 14,207.50-19,606.35-7,920.28

Finding the Fourth Proportional to 14,207.50, 19,606.35 and 7,920.28

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Solution

The fourth proportional to 14,207.50, 19,606.35 and 7,920.28 is: 10,929.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,207.50 : 19,606.35 = 7,920.28 : x
  2. Step 2: Convert to fraction form
    14,207.50/19,606.35 = 7,920.28/x
  3. Step 3: Cross multiply
    14,207.50x = 19,606.35 × 7,920.28
  4. Step 4: Simplify right side
    14,207.50x = 155,287,781.78
  5. Step 5: Solve for x
    x = 155,287,781.78/14,207.50
  6. Step 6: Final answer
    x = 10,929.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.