Home / 15,569.28-21,485.60-8,854.88

Finding the Fourth Proportional to 15,569.28, 21,485.60 and 8,854.88

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Solution

The fourth proportional to 15,569.28, 21,485.60 and 8,854.88 is: 12,219.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,569.28 : 21,485.60 = 8,854.88 : x
  2. Step 2: Convert to fraction form
    15,569.28/21,485.60 = 8,854.88/x
  3. Step 3: Cross multiply
    15,569.28x = 21,485.60 × 8,854.88
  4. Step 4: Simplify right side
    15,569.28x = 190,252,409.73
  5. Step 5: Solve for x
    x = 190,252,409.73/15,569.28
  6. Step 6: Final answer
    x = 12,219.73

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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.