Home / 15,657.39-21,602.88-8,940.60

Finding the Fourth Proportional to 15,657.39, 21,602.88 and 8,940.60

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Solution

The fourth proportional to 15,657.39, 21,602.88 and 8,940.60 is: 12,335.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,657.39 : 21,602.88 = 8,940.60 : x
  2. Step 2: Convert to fraction form
    15,657.39/21,602.88 = 8,940.60/x
  3. Step 3: Cross multiply
    15,657.39x = 21,602.88 × 8,940.60
  4. Step 4: Simplify right side
    15,657.39x = 193,142,708.93
  5. Step 5: Solve for x
    x = 193,142,708.93/15,657.39
  6. Step 6: Final answer
    x = 12,335.56

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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.