Home / 21,116.19-31,650.14-10,007.15

Finding the Fourth Proportional to 21,116.19, 31,650.14 and 10,007.15

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Solution

The fourth proportional to 21,116.19, 31,650.14 and 10,007.15 is: 14,999.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,116.19 : 31,650.14 = 10,007.15 : x
  2. Step 2: Convert to fraction form
    21,116.19/31,650.14 = 10,007.15/x
  3. Step 3: Cross multiply
    21,116.19x = 31,650.14 × 10,007.15
  4. Step 4: Simplify right side
    21,116.19x = 316,727,565.27
  5. Step 5: Solve for x
    x = 316,727,565.27/21,116.19
  6. Step 6: Final answer
    x = 14,999.27

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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.