Home / 15,604.28-21,535.80-8,799.60

Finding the Fourth Proportional to 15,604.28, 21,535.80 and 8,799.60

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Solution

The fourth proportional to 15,604.28, 21,535.80 and 8,799.60 is: 12,144.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,604.28 : 21,535.80 = 8,799.60 : x
  2. Step 2: Convert to fraction form
    15,604.28/21,535.80 = 8,799.60/x
  3. Step 3: Cross multiply
    15,604.28x = 21,535.80 × 8,799.60
  4. Step 4: Simplify right side
    15,604.28x = 189,506,407.34
  5. Step 5: Solve for x
    x = 189,506,407.34/15,604.28
  6. Step 6: Final answer
    x = 12,144.51

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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.