Home / 38,517.90-53,157.16-21,522.18

Finding the Fourth Proportional to 38,517.90, 53,157.16 and 21,522.18

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Solution

The fourth proportional to 38,517.90, 53,157.16 and 21,522.18 is: 29,701.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,517.90 : 53,157.16 = 21,522.18 : x
  2. Step 2: Convert to fraction form
    38,517.90/53,157.16 = 21,522.18/x
  3. Step 3: Cross multiply
    38,517.90x = 53,157.16 × 21,522.18
  4. Step 4: Simplify right side
    38,517.90x = 1,144,058,192.05
  5. Step 5: Solve for x
    x = 1,144,058,192.05/38,517.90
  6. Step 6: Final answer
    x = 29,701.99

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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.