Home / 19,931,844.30-29,897,766.45-12,721,961.40

Finding the Fourth Proportional to 19,931,844.30, 29,897,766.45 and 12,721,961.40

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Solution

The fourth proportional to 19,931,844.30, 29,897,766.45 and 12,721,961.40 is: 19,082,942.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,931,844.30 : 29,897,766.45 = 12,721,961.40 : x
  2. Step 2: Convert to fraction form
    19,931,844.30/29,897,766.45 = 12,721,961.40/x
  3. Step 3: Cross multiply
    19,931,844.30x = 29,897,766.45 × 12,721,961.40
  4. Step 4: Simplify right side
    19,931,844.30x = 380,358,230,723,115.06
  5. Step 5: Solve for x
    x = 380,358,230,723,115.06/19,931,844.30
  6. Step 6: Final answer
    x = 19,082,942.10

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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.