Home / 28,225.89-38,952.15-15,480.24

Finding the Fourth Proportional to 28,225.89, 38,952.15 and 15,480.24

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Solution

The fourth proportional to 28,225.89, 38,952.15 and 15,480.24 is: 21,362.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,225.89 : 38,952.15 = 15,480.24 : x
  2. Step 2: Convert to fraction form
    28,225.89/38,952.15 = 15,480.24/x
  3. Step 3: Cross multiply
    28,225.89x = 38,952.15 × 15,480.24
  4. Step 4: Simplify right side
    28,225.89x = 602,988,630.52
  5. Step 5: Solve for x
    x = 602,988,630.52/28,225.89
  6. Step 6: Final answer
    x = 21,362.96

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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.