Home / 20,803,642.40-31,205,560.80-7,340,470.40

Finding the Fourth Proportional to 20,803,642.40, 31,205,560.80 and 7,340,470.40

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Solution

The fourth proportional to 20,803,642.40, 31,205,560.80 and 7,340,470.40 is: 11,010,739.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803,642.40 : 31,205,560.80 = 7,340,470.40 : x
  2. Step 2: Convert to fraction form
    20,803,642.40/31,205,560.80 = 7,340,470.40/x
  3. Step 3: Cross multiply
    20,803,642.40x = 31,205,560.80 × 7,340,470.40
  4. Step 4: Simplify right side
    20,803,642.40x = 229,063,495,367,800.34
  5. Step 5: Solve for x
    x = 229,063,495,367,800.34/20,803,642.40
  6. Step 6: Final answer
    x = 11,010,739.90

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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.