Home / 20,813,337.45-28,721,684.97-11,521,312.83

Finding the Fourth Proportional to 20,813,337.45, 28,721,684.97 and 11,521,312.83

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Solution

The fourth proportional to 20,813,337.45, 28,721,684.97 and 11,521,312.83 is: 15,899,012.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,813,337.45 : 28,721,684.97 = 11,521,312.83 : x
  2. Step 2: Convert to fraction form
    20,813,337.45/28,721,684.97 = 11,521,312.83/x
  3. Step 3: Cross multiply
    20,813,337.45x = 28,721,684.97 × 11,521,312.83
  4. Step 4: Simplify right side
    20,813,337.45x = 330,911,517,544,079.12
  5. Step 5: Solve for x
    x = 330,911,517,544,079.12/20,813,337.45
  6. Step 6: Final answer
    x = 15,899,012.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.