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Finding the Fourth Proportional to 28,479.60, 42,670.80 and 23,522.40

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Solution

The fourth proportional to 28,479.60, 42,670.80 and 23,522.40 is: 35,243.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479.60 : 42,670.80 = 23,522.40 : x
  2. Step 2: Convert to fraction form
    28,479.60/42,670.80 = 23,522.40/x
  3. Step 3: Cross multiply
    28,479.60x = 42,670.80 × 23,522.40
  4. Step 4: Simplify right side
    28,479.60x = 1,003,719,625.92
  5. Step 5: Solve for x
    x = 1,003,719,625.92/28,479.60
  6. Step 6: Final answer
    x = 35,243.46

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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.