Home / 20,390,737.81-28,139,335.20-11,098,285.71

Finding the Fourth Proportional to 20,390,737.81, 28,139,335.20 and 11,098,285.71

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Solution

The fourth proportional to 20,390,737.81, 28,139,335.20 and 11,098,285.71 is: 15,315,697.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390,737.81 : 28,139,335.20 = 11,098,285.71 : x
  2. Step 2: Convert to fraction form
    20,390,737.81/28,139,335.20 = 11,098,285.71/x
  3. Step 3: Cross multiply
    20,390,737.81x = 28,139,335.20 × 11,098,285.71
  4. Step 4: Simplify right side
    20,390,737.81x = 312,298,381,870,977.19
  5. Step 5: Solve for x
    x = 312,298,381,870,977.19/20,390,737.81
  6. Step 6: Final answer
    x = 15,315,697.98

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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.