Home / 15,162.95-20,925.45-8,789.75

Finding the Fourth Proportional to 15,162.95, 20,925.45 and 8,789.75

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Solution

The fourth proportional to 15,162.95, 20,925.45 and 8,789.75 is: 12,130.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,162.95 : 20,925.45 = 8,789.75 : x
  2. Step 2: Convert to fraction form
    15,162.95/20,925.45 = 8,789.75/x
  3. Step 3: Cross multiply
    15,162.95x = 20,925.45 × 8,789.75
  4. Step 4: Simplify right side
    15,162.95x = 183,929,474.14
  5. Step 5: Solve for x
    x = 183,929,474.14/15,162.95
  6. Step 6: Final answer
    x = 12,130.19

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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.