Home / 20,736,172.86-31,104,259.28-18,216,748.86

Finding the Fourth Proportional to 20,736,172.86, 31,104,259.28 and 18,216,748.86

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Solution

The fourth proportional to 20,736,172.86, 31,104,259.28 and 18,216,748.86 is: 27,325,123.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,172.86 : 31,104,259.28 = 18,216,748.86 : x
  2. Step 2: Convert to fraction form
    20,736,172.86/31,104,259.28 = 18,216,748.86/x
  3. Step 3: Cross multiply
    20,736,172.86x = 31,104,259.28 × 18,216,748.86
  4. Step 4: Simplify right side
    20,736,172.86x = 566,618,479,780,084.38
  5. Step 5: Solve for x
    x = 566,618,479,780,084.38/20,736,172.86
  6. Step 6: Final answer
    x = 27,325,123.28

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1.5x scale

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.