Home / 20,838,842.40-31,275,978.30-9,342,002.10

Finding the Fourth Proportional to 20,838,842.40, 31,275,978.30 and 9,342,002.10

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Solution

The fourth proportional to 20,838,842.40, 31,275,978.30 and 9,342,002.10 is: 14,020,944.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838,842.40 : 31,275,978.30 = 9,342,002.10 : x
  2. Step 2: Convert to fraction form
    20,838,842.40/31,275,978.30 = 9,342,002.10/x
  3. Step 3: Cross multiply
    20,838,842.40x = 31,275,978.30 × 9,342,002.10
  4. Step 4: Simplify right side
    20,838,842.40x = 292,180,254,958,154.44
  5. Step 5: Solve for x
    x = 292,180,254,958,154.44/20,838,842.40
  6. Step 6: Final answer
    x = 14,020,944.61

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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.