Home / 20,939,063.20-31,385,266.80-8,155,319.20

Finding the Fourth Proportional to 20,939,063.20, 31,385,266.80 and 8,155,319.20

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Solution

The fourth proportional to 20,939,063.20, 31,385,266.80 and 8,155,319.20 is: 12,223,893.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,939,063.20 : 31,385,266.80 = 8,155,319.20 : x
  2. Step 2: Convert to fraction form
    20,939,063.20/31,385,266.80 = 8,155,319.20/x
  3. Step 3: Cross multiply
    20,939,063.20x = 31,385,266.80 × 8,155,319.20
  4. Step 4: Simplify right side
    20,939,063.20x = 255,956,868,931,162.56
  5. Step 5: Solve for x
    x = 255,956,868,931,162.56/20,939,063.20
  6. Step 6: Final answer
    x = 12,223,893.04

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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.