Home / 19,988.30-29,957.32-10,605.14

Finding the Fourth Proportional to 19,988.30, 29,957.32 and 10,605.14

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Solution

The fourth proportional to 19,988.30, 29,957.32 and 10,605.14 is: 15,894.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,988.30 : 29,957.32 = 10,605.14 : x
  2. Step 2: Convert to fraction form
    19,988.30/29,957.32 = 10,605.14/x
  3. Step 3: Cross multiply
    19,988.30x = 29,957.32 × 10,605.14
  4. Step 4: Simplify right side
    19,988.30x = 317,701,572.62
  5. Step 5: Solve for x
    x = 317,701,572.62/19,988.30
  6. Step 6: Final answer
    x = 15,894.38

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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.