Home / 28,008.75-38,652.90-15,434.31

Finding the Fourth Proportional to 28,008.75, 38,652.90 and 15,434.31

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Solution

The fourth proportional to 28,008.75, 38,652.90 and 15,434.31 is: 21,299.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.75 : 38,652.90 = 15,434.31 : x
  2. Step 2: Convert to fraction form
    28,008.75/38,652.90 = 15,434.31/x
  3. Step 3: Cross multiply
    28,008.75x = 38,652.90 × 15,434.31
  4. Step 4: Simplify right side
    28,008.75x = 596,580,841.00
  5. Step 5: Solve for x
    x = 596,580,841.00/28,008.75
  6. Step 6: Final answer
    x = 21,299.80

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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.