Home / 21,154.77-31,728.04-8,008.17

Finding the Fourth Proportional to 21,154.77, 31,728.04 and 8,008.17

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Solution

The fourth proportional to 21,154.77, 31,728.04 and 8,008.17 is: 12,010.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.77 : 31,728.04 = 8,008.17 : x
  2. Step 2: Convert to fraction form
    21,154.77/31,728.04 = 8,008.17/x
  3. Step 3: Cross multiply
    21,154.77x = 31,728.04 × 8,008.17
  4. Step 4: Simplify right side
    21,154.77x = 254,083,538.09
  5. Step 5: Solve for x
    x = 254,083,538.09/21,154.77
  6. Step 6: Final answer
    x = 12,010.70

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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.