Home / 19,931,872.05-29,897,808.08-12,721,989.15

Finding the Fourth Proportional to 19,931,872.05, 29,897,808.08 and 12,721,989.15

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Solution

The fourth proportional to 19,931,872.05, 29,897,808.08 and 12,721,989.15 is: 19,082,983.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,931,872.05 : 29,897,808.08 = 12,721,989.15 : x
  2. Step 2: Convert to fraction form
    19,931,872.05/29,897,808.08 = 12,721,989.15/x
  3. Step 3: Cross multiply
    19,931,872.05x = 29,897,808.08 × 12,721,989.15
  4. Step 4: Simplify right side
    19,931,872.05x = 380,359,589,938,932.38
  5. Step 5: Solve for x
    x = 380,359,589,938,932.38/19,931,872.05
  6. Step 6: Final answer
    x = 19,082,983.73

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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.