Home / 15,060.18-20,782.76-8,345.66

Finding the Fourth Proportional to 15,060.18, 20,782.76 and 8,345.66

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Solution

The fourth proportional to 15,060.18, 20,782.76 and 8,345.66 is: 11,516.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,060.18 : 20,782.76 = 8,345.66 : x
  2. Step 2: Convert to fraction form
    15,060.18/20,782.76 = 8,345.66/x
  3. Step 3: Cross multiply
    15,060.18x = 20,782.76 × 8,345.66
  4. Step 4: Simplify right side
    15,060.18x = 173,445,859.05
  5. Step 5: Solve for x
    x = 173,445,859.05/15,060.18
  6. Step 6: Final answer
    x = 11,516.85

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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.