Home / 20,405,538.27-28,160,915.36-11,238,178.59

Finding the Fourth Proportional to 20,405,538.27, 28,160,915.36 and 11,238,178.59

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Solution

The fourth proportional to 20,405,538.27, 28,160,915.36 and 11,238,178.59 is: 15,509,387.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405,538.27 : 28,160,915.36 = 11,238,178.59 : x
  2. Step 2: Convert to fraction form
    20,405,538.27/28,160,915.36 = 11,238,178.59/x
  3. Step 3: Cross multiply
    20,405,538.27x = 28,160,915.36 × 11,238,178.59
  4. Step 4: Simplify right side
    20,405,538.27x = 316,477,396,017,363.25
  5. Step 5: Solve for x
    x = 316,477,396,017,363.25/20,405,538.27
  6. Step 6: Final answer
    x = 15,509,387.30

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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.