Home / 14,887.78-20,543.96-8,173.40

Finding the Fourth Proportional to 14,887.78, 20,543.96 and 8,173.40

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Solution

The fourth proportional to 14,887.78, 20,543.96 and 8,173.40 is: 11,278.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,887.78 : 20,543.96 = 8,173.40 : x
  2. Step 2: Convert to fraction form
    14,887.78/20,543.96 = 8,173.40/x
  3. Step 3: Cross multiply
    14,887.78x = 20,543.96 × 8,173.40
  4. Step 4: Simplify right side
    14,887.78x = 167,914,002.66
  5. Step 5: Solve for x
    x = 167,914,002.66/14,887.78
  6. Step 6: Final answer
    x = 11,278.65

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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.