Home / 31,506,390.80-43,486,909.08-20,520,516.32

Finding the Fourth Proportional to 31,506,390.80, 43,486,909.08 and 20,520,516.32

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Solution

The fourth proportional to 31,506,390.80, 43,486,909.08 and 20,520,516.32 is: 28,323,581.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,506,390.80 : 43,486,909.08 = 20,520,516.32 : x
  2. Step 2: Convert to fraction form
    31,506,390.80/43,486,909.08 = 20,520,516.32/x
  3. Step 3: Cross multiply
    31,506,390.80x = 43,486,909.08 × 20,520,516.32
  4. Step 4: Simplify right side
    31,506,390.80x = 892,373,827,482,496.12
  5. Step 5: Solve for x
    x = 892,373,827,482,496.12/31,506,390.80
  6. Step 6: Final answer
    x = 28,323,581.50

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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.