Home / 28,425.60-42,638.40-15,284.16

Finding the Fourth Proportional to 28,425.60, 42,638.40 and 15,284.16

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Solution

The fourth proportional to 28,425.60, 42,638.40 and 15,284.16 is: 22,926.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,425.60 : 42,638.40 = 15,284.16 : x
  2. Step 2: Convert to fraction form
    28,425.60/42,638.40 = 15,284.16/x
  3. Step 3: Cross multiply
    28,425.60x = 42,638.40 × 15,284.16
  4. Step 4: Simplify right side
    28,425.60x = 651,692,127.74
  5. Step 5: Solve for x
    x = 651,692,127.74/28,425.60
  6. Step 6: Final answer
    x = 22,926.24

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.