Home / 12,458,085.60-18,687,128.40-9,269,439.60

Finding the Fourth Proportional to 12,458,085.60, 18,687,128.40 and 9,269,439.60

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Solution

The fourth proportional to 12,458,085.60, 18,687,128.40 and 9,269,439.60 is: 13,904,159.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458,085.60 : 18,687,128.40 = 9,269,439.60 : x
  2. Step 2: Convert to fraction form
    12,458,085.60/18,687,128.40 = 9,269,439.60/x
  3. Step 3: Cross multiply
    12,458,085.60x = 18,687,128.40 × 9,269,439.60
  4. Step 4: Simplify right side
    12,458,085.60x = 173,219,208,001,244.62
  5. Step 5: Solve for x
    x = 173,219,208,001,244.62/12,458,085.60
  6. Step 6: Final answer
    x = 13,904,159.40

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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.