Home / 28,726.44-39,641.76-15,979.60

Finding the Fourth Proportional to 28,726.44, 39,641.76 and 15,979.60

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Solution

The fourth proportional to 28,726.44, 39,641.76 and 15,979.60 is: 22,051.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,726.44 : 39,641.76 = 15,979.60 : x
  2. Step 2: Convert to fraction form
    28,726.44/39,641.76 = 15,979.60/x
  3. Step 3: Cross multiply
    28,726.44x = 39,641.76 × 15,979.60
  4. Step 4: Simplify right side
    28,726.44x = 633,459,468.10
  5. Step 5: Solve for x
    x = 633,459,468.10/28,726.44
  6. Step 6: Final answer
    x = 22,051.44

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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.