Home / 13,117.26-18,108.51-8,890.66

Finding the Fourth Proportional to 13,117.26, 18,108.51 and 8,890.66

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Solution

The fourth proportional to 13,117.26, 18,108.51 and 8,890.66 is: 12,273.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.26 : 18,108.51 = 8,890.66 : x
  2. Step 2: Convert to fraction form
    13,117.26/18,108.51 = 8,890.66/x
  3. Step 3: Cross multiply
    13,117.26x = 18,108.51 × 8,890.66
  4. Step 4: Simplify right side
    13,117.26x = 160,996,605.52
  5. Step 5: Solve for x
    x = 160,996,605.52/13,117.26
  6. Step 6: Final answer
    x = 12,273.65

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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.