Home / 21,254,712.30-31,882,068.45-8,477,189.10

Finding the Fourth Proportional to 21,254,712.30, 31,882,068.45 and 8,477,189.10

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Solution

The fourth proportional to 21,254,712.30, 31,882,068.45 and 8,477,189.10 is: 12,715,783.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254,712.30 : 31,882,068.45 = 8,477,189.10 : x
  2. Step 2: Convert to fraction form
    21,254,712.30/31,882,068.45 = 8,477,189.10/x
  3. Step 3: Cross multiply
    21,254,712.30x = 31,882,068.45 × 8,477,189.10
  4. Step 4: Simplify right side
    21,254,712.30x = 270,270,323,149,793.88
  5. Step 5: Solve for x
    x = 270,270,323,149,793.88/21,254,712.30
  6. Step 6: Final answer
    x = 12,715,783.65

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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.