Home / 28,139.48-38,840.16-17,522.84

Finding the Fourth Proportional to 28,139.48, 38,840.16 and 17,522.84

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Solution

The fourth proportional to 28,139.48, 38,840.16 and 17,522.84 is: 24,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139.48 : 38,840.16 = 17,522.84 : x
  2. Step 2: Convert to fraction form
    28,139.48/38,840.16 = 17,522.84/x
  3. Step 3: Cross multiply
    28,139.48x = 38,840.16 × 17,522.84
  4. Step 4: Simplify right side
    28,139.48x = 680,589,909.25
  5. Step 5: Solve for x
    x = 680,589,909.25/28,139.48
  6. Step 6: Final answer
    x = 24,186.30

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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.