Home / 20,139,324.60-30,208,986.90-18,123,785.40

Finding the Fourth Proportional to 20,139,324.60, 30,208,986.90 and 18,123,785.40

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Solution

The fourth proportional to 20,139,324.60, 30,208,986.90 and 18,123,785.40 is: 27,185,678.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139,324.60 : 30,208,986.90 = 18,123,785.40 : x
  2. Step 2: Convert to fraction form
    20,139,324.60/30,208,986.90 = 18,123,785.40/x
  3. Step 3: Cross multiply
    20,139,324.60x = 30,208,986.90 × 18,123,785.40
  4. Step 4: Simplify right side
    20,139,324.60x = 547,501,195,727,011.19
  5. Step 5: Solve for x
    x = 547,501,195,727,011.19/20,139,324.60
  6. Step 6: Final answer
    x = 27,185,678.10

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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.