Home / 28,887.53-39,851-18,127.04

Finding the Fourth Proportional to 28,887.53, 39,851 and 18,127.04

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Solution

The fourth proportional to 28,887.53, 39,851 and 18,127.04 is: 25,006.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,887.53 : 39,851 = 18,127.04 : x
  2. Step 2: Convert to fraction form
    28,887.53/39,851 = 18,127.04/x
  3. Step 3: Cross multiply
    28,887.53x = 39,851 × 18,127.04
  4. Step 4: Simplify right side
    28,887.53x = 722,380,671.04
  5. Step 5: Solve for x
    x = 722,380,671.04/28,887.53
  6. Step 6: Final answer
    x = 25,006.66

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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.