Home / 10,921,325.60-16,381,988.40-7,520,103.20

Finding the Fourth Proportional to 10,921,325.60, 16,381,988.40 and 7,520,103.20

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Solution

The fourth proportional to 10,921,325.60, 16,381,988.40 and 7,520,103.20 is: 11,280,154.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921,325.60 : 16,381,988.40 = 7,520,103.20 : x
  2. Step 2: Convert to fraction form
    10,921,325.60/16,381,988.40 = 7,520,103.20/x
  3. Step 3: Cross multiply
    10,921,325.60x = 16,381,988.40 × 7,520,103.20
  4. Step 4: Simplify right side
    10,921,325.60x = 123,194,243,389,202.89
  5. Step 5: Solve for x
    x = 123,194,243,389,202.89/10,921,325.60
  6. Step 6: Final answer
    x = 11,280,154.80

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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.