Home / 18,515.02-25,543.50-11,799.40

Finding the Fourth Proportional to 18,515.02, 25,543.50 and 11,799.40

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Solution

The fourth proportional to 18,515.02, 25,543.50 and 11,799.40 is: 16,278.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.02 : 25,543.50 = 11,799.40 : x
  2. Step 2: Convert to fraction form
    18,515.02/25,543.50 = 11,799.40/x
  3. Step 3: Cross multiply
    18,515.02x = 25,543.50 × 11,799.40
  4. Step 4: Simplify right side
    18,515.02x = 301,397,973.90
  5. Step 5: Solve for x
    x = 301,397,973.90/18,515.02
  6. Step 6: Final answer
    x = 16,278.57

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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.