Home / 28,122.59-38,809.99-15,548.15

Finding the Fourth Proportional to 28,122.59, 38,809.99 and 15,548.15

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Solution

The fourth proportional to 28,122.59, 38,809.99 and 15,548.15 is: 21,456.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,122.59 : 38,809.99 = 15,548.15 : x
  2. Step 2: Convert to fraction form
    28,122.59/38,809.99 = 15,548.15/x
  3. Step 3: Cross multiply
    28,122.59x = 38,809.99 × 15,548.15
  4. Step 4: Simplify right side
    28,122.59x = 603,423,546.02
  5. Step 5: Solve for x
    x = 603,423,546.02/28,122.59
  6. Step 6: Final answer
    x = 21,456.90

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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.