Home / 38,687.47-58,047.60-21,136.81

Finding the Fourth Proportional to 38,687.47, 58,047.60 and 21,136.81

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Solution

The fourth proportional to 38,687.47, 58,047.60 and 21,136.81 is: 31,714.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,687.47 : 58,047.60 = 21,136.81 : x
  2. Step 2: Convert to fraction form
    38,687.47/58,047.60 = 21,136.81/x
  3. Step 3: Cross multiply
    38,687.47x = 58,047.60 × 21,136.81
  4. Step 4: Simplify right side
    38,687.47x = 1,226,941,092.16
  5. Step 5: Solve for x
    x = 1,226,941,092.16/38,687.47
  6. Step 6: Final answer
    x = 31,714.17

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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.