Home / 28,877.99-39,851.20-16,131.35

Finding the Fourth Proportional to 28,877.99, 39,851.20 and 16,131.35

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Solution

The fourth proportional to 28,877.99, 39,851.20 and 16,131.35 is: 22,261.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,877.99 : 39,851.20 = 16,131.35 : x
  2. Step 2: Convert to fraction form
    28,877.99/39,851.20 = 16,131.35/x
  3. Step 3: Cross multiply
    28,877.99x = 39,851.20 × 16,131.35
  4. Step 4: Simplify right side
    28,877.99x = 642,853,655.12
  5. Step 5: Solve for x
    x = 642,853,655.12/28,877.99
  6. Step 6: Final answer
    x = 22,261.02

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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.