Home / 13,432.51-20,143.50-7,887.25

Finding the Fourth Proportional to 13,432.51, 20,143.50 and 7,887.25

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Solution

The fourth proportional to 13,432.51, 20,143.50 and 7,887.25 is: 11,827.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,432.51 : 20,143.50 = 7,887.25 : x
  2. Step 2: Convert to fraction form
    13,432.51/20,143.50 = 7,887.25/x
  3. Step 3: Cross multiply
    13,432.51x = 20,143.50 × 7,887.25
  4. Step 4: Simplify right side
    13,432.51x = 158,876,820.38
  5. Step 5: Solve for x
    x = 158,876,820.38/13,432.51
  6. Step 6: Final answer
    x = 11,827.78

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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.