Home / 28,115.24-38,801.04-15,539.72

Finding the Fourth Proportional to 28,115.24, 38,801.04 and 15,539.72

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Solution

The fourth proportional to 28,115.24, 38,801.04 and 15,539.72 is: 21,445.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.24 : 38,801.04 = 15,539.72 : x
  2. Step 2: Convert to fraction form
    28,115.24/38,801.04 = 15,539.72/x
  3. Step 3: Cross multiply
    28,115.24x = 38,801.04 × 15,539.72
  4. Step 4: Simplify right side
    28,115.24x = 602,957,297.31
  5. Step 5: Solve for x
    x = 602,957,297.31/28,115.24
  6. Step 6: Final answer
    x = 21,445.92

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1.5x scale

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.