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Finding the Fourth Proportional to 28,407.60, 42,630.60 and 15,927.60

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Solution

The fourth proportional to 28,407.60, 42,630.60 and 15,927.60 is: 23,902.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,407.60 : 42,630.60 = 15,927.60 : x
  2. Step 2: Convert to fraction form
    28,407.60/42,630.60 = 15,927.60/x
  3. Step 3: Cross multiply
    28,407.60x = 42,630.60 × 15,927.60
  4. Step 4: Simplify right side
    28,407.60x = 679,003,144.56
  5. Step 5: Solve for x
    x = 679,003,144.56/28,407.60
  6. Step 6: Final answer
    x = 23,902.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.