Home / 28,225.22-38,951.48-15,478.92

Finding the Fourth Proportional to 28,225.22, 38,951.48 and 15,478.92

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Solution

The fourth proportional to 28,225.22, 38,951.48 and 15,478.92 is: 21,361.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,225.22 : 38,951.48 = 15,478.92 : x
  2. Step 2: Convert to fraction form
    28,225.22/38,951.48 = 15,478.92/x
  3. Step 3: Cross multiply
    28,225.22x = 38,951.48 × 15,478.92
  4. Step 4: Simplify right side
    28,225.22x = 602,926,881.50
  5. Step 5: Solve for x
    x = 602,926,881.50/28,225.22
  6. Step 6: Final answer
    x = 21,361.29

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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.