Home / 18,715,538.20-28,073,307.30-9,125,980.60

Finding the Fourth Proportional to 18,715,538.20, 28,073,307.30 and 9,125,980.60

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Solution

The fourth proportional to 18,715,538.20, 28,073,307.30 and 9,125,980.60 is: 13,688,970.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715,538.20 : 28,073,307.30 = 9,125,980.60 : x
  2. Step 2: Convert to fraction form
    18,715,538.20/28,073,307.30 = 9,125,980.60/x
  3. Step 3: Cross multiply
    18,715,538.20x = 28,073,307.30 × 9,125,980.60
  4. Step 4: Simplify right side
    18,715,538.20x = 256,196,457,797,638.38
  5. Step 5: Solve for x
    x = 256,196,457,797,638.38/18,715,538.20
  6. Step 6: Final answer
    x = 13,688,970.90

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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.