Home / 38,079-52,549.20-21,315.24

Finding the Fourth Proportional to 38,079, 52,549.20 and 21,315.24

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Solution

The fourth proportional to 38,079, 52,549.20 and 21,315.24 is: 29,415.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,079 : 52,549.20 = 21,315.24 : x
  2. Step 2: Convert to fraction form
    38,079/52,549.20 = 21,315.24/x
  3. Step 3: Cross multiply
    38,079x = 52,549.20 × 21,315.24
  4. Step 4: Simplify right side
    38,079x = 1,120,098,809.81
  5. Step 5: Solve for x
    x = 1,120,098,809.81/38,079
  6. Step 6: Final answer
    x = 29,415.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.