Home / 28,265,538.60-42,398,307.90-21,091,085.10

Finding the Fourth Proportional to 28,265,538.60, 42,398,307.90 and 21,091,085.10

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Solution

The fourth proportional to 28,265,538.60, 42,398,307.90 and 21,091,085.10 is: 31,636,627.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,265,538.60 : 42,398,307.90 = 21,091,085.10 : x
  2. Step 2: Convert to fraction form
    28,265,538.60/42,398,307.90 = 21,091,085.10/x
  3. Step 3: Cross multiply
    28,265,538.60x = 42,398,307.90 × 21,091,085.10
  4. Step 4: Simplify right side
    28,265,538.60x = 894,226,320,014,902.38
  5. Step 5: Solve for x
    x = 894,226,320,014,902.38/28,265,538.60
  6. Step 6: Final answer
    x = 31,636,627.65

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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.