Home / 21,002,856.30-31,504,284.45-12,358,082.70

Finding the Fourth Proportional to 21,002,856.30, 31,504,284.45 and 12,358,082.70

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Solution

The fourth proportional to 21,002,856.30, 31,504,284.45 and 12,358,082.70 is: 18,537,124.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002,856.30 : 31,504,284.45 = 12,358,082.70 : x
  2. Step 2: Convert to fraction form
    21,002,856.30/31,504,284.45 = 12,358,082.70/x
  3. Step 3: Cross multiply
    21,002,856.30x = 31,504,284.45 × 12,358,082.70
  4. Step 4: Simplify right side
    21,002,856.30x = 389,332,552,637,424
  5. Step 5: Solve for x
    x = 389,332,552,637,424/21,002,856.30
  6. Step 6: Final answer
    x = 18,537,124.05

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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.