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Finding the Fourth Proportional to 15,657.60, 23,486.40 and 5,276.64

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Solution

The fourth proportional to 15,657.60, 23,486.40 and 5,276.64 is: 7,914.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,657.60 : 23,486.40 = 5,276.64 : x
  2. Step 2: Convert to fraction form
    15,657.60/23,486.40 = 5,276.64/x
  3. Step 3: Cross multiply
    15,657.60x = 23,486.40 × 5,276.64
  4. Step 4: Simplify right side
    15,657.60x = 123,929,277.70
  5. Step 5: Solve for x
    x = 123,929,277.70/15,657.60
  6. Step 6: Final answer
    x = 7,914.96

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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.