Home / 15,060.15-20,783.18-8,345.89

Finding the Fourth Proportional to 15,060.15, 20,783.18 and 8,345.89

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Solution

The fourth proportional to 15,060.15, 20,783.18 and 8,345.89 is: 11,517.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,060.15 : 20,783.18 = 8,345.89 : x
  2. Step 2: Convert to fraction form
    15,060.15/20,783.18 = 8,345.89/x
  3. Step 3: Cross multiply
    15,060.15x = 20,783.18 × 8,345.89
  4. Step 4: Simplify right side
    15,060.15x = 173,454,134.13
  5. Step 5: Solve for x
    x = 173,454,134.13/15,060.15
  6. Step 6: Final answer
    x = 11,517.42

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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.