Home / 19,908.90-29,864.66-7,428.62

Finding the Fourth Proportional to 19,908.90, 29,864.66 and 7,428.62

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Solution

The fourth proportional to 19,908.90, 29,864.66 and 7,428.62 is: 11,143.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,908.90 : 29,864.66 = 7,428.62 : x
  2. Step 2: Convert to fraction form
    19,908.90/29,864.66 = 7,428.62/x
  3. Step 3: Cross multiply
    19,908.90x = 29,864.66 × 7,428.62
  4. Step 4: Simplify right side
    19,908.90x = 221,853,024.10
  5. Step 5: Solve for x
    x = 221,853,024.10/19,908.90
  6. Step 6: Final answer
    x = 11,143.41

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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.