Home / 20,390,986.55-28,141,957.55-11,451,565.88

Finding the Fourth Proportional to 20,390,986.55, 28,141,957.55 and 11,451,565.88

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Solution

The fourth proportional to 20,390,986.55, 28,141,957.55 and 11,451,565.88 is: 15,804,506.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390,986.55 : 28,141,957.55 = 11,451,565.88 : x
  2. Step 2: Convert to fraction form
    20,390,986.55/28,141,957.55 = 11,451,565.88/x
  3. Step 3: Cross multiply
    20,390,986.55x = 28,141,957.55 × 11,451,565.88
  4. Step 4: Simplify right side
    20,390,986.55x = 322,269,480,678,020.81
  5. Step 5: Solve for x
    x = 322,269,480,678,020.81/20,390,986.55
  6. Step 6: Final answer
    x = 15,804,506.56

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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.