Home / 18,715,727.60-28,073,591.40-8,638,031.60

Finding the Fourth Proportional to 18,715,727.60, 28,073,591.40 and 8,638,031.60

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Solution

The fourth proportional to 18,715,727.60, 28,073,591.40 and 8,638,031.60 is: 12,957,047.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715,727.60 : 28,073,591.40 = 8,638,031.60 : x
  2. Step 2: Convert to fraction form
    18,715,727.60/28,073,591.40 = 8,638,031.60/x
  3. Step 3: Cross multiply
    18,715,727.60x = 28,073,591.40 × 8,638,031.60
  4. Step 4: Simplify right side
    18,715,727.60x = 242,500,569,638,688.22
  5. Step 5: Solve for x
    x = 242,500,569,638,688.22/18,715,727.60
  6. Step 6: Final answer
    x = 12,957,047.40

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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.