Home / 20,402,015-28,154,780.70-11,234,635.88

Finding the Fourth Proportional to 20,402,015, 28,154,780.70 and 11,234,635.88

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Solution

The fourth proportional to 20,402,015, 28,154,780.70 and 11,234,635.88 is: 15,503,797.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402,015 : 28,154,780.70 = 11,234,635.88 : x
  2. Step 2: Convert to fraction form
    20,402,015/28,154,780.70 = 11,234,635.88/x
  3. Step 3: Cross multiply
    20,402,015x = 28,154,780.70 × 11,234,635.88
  4. Step 4: Simplify right side
    20,402,015x = 316,308,709,445,751.50
  5. Step 5: Solve for x
    x = 316,308,709,445,751.50/20,402,015
  6. Step 6: Final answer
    x = 15,503,797.51

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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.