Home / 11,279.80-16,887.30-10,113.40

Finding the Fourth Proportional to 11,279.80, 16,887.30 and 10,113.40

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Solution

The fourth proportional to 11,279.80, 16,887.30 and 10,113.40 is: 15,141.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,279.80 : 16,887.30 = 10,113.40 : x
  2. Step 2: Convert to fraction form
    11,279.80/16,887.30 = 10,113.40/x
  3. Step 3: Cross multiply
    11,279.80x = 16,887.30 × 10,113.40
  4. Step 4: Simplify right side
    11,279.80x = 170,788,019.82
  5. Step 5: Solve for x
    x = 170,788,019.82/11,279.80
  6. Step 6: Final answer
    x = 15,141.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.