Home / 15,655.30-21,604.20-8,581.60

Finding the Fourth Proportional to 15,655.30, 21,604.20 and 8,581.60

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Solution

The fourth proportional to 15,655.30, 21,604.20 and 8,581.60 is: 11,842.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,655.30 : 21,604.20 = 8,581.60 : x
  2. Step 2: Convert to fraction form
    15,655.30/21,604.20 = 8,581.60/x
  3. Step 3: Cross multiply
    15,655.30x = 21,604.20 × 8,581.60
  4. Step 4: Simplify right side
    15,655.30x = 185,398,602.72
  5. Step 5: Solve for x
    x = 185,398,602.72/15,655.30
  6. Step 6: Final answer
    x = 11,842.55

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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.