Home / 13,437.80-20,132.40-10,959.20

Finding the Fourth Proportional to 13,437.80, 20,132.40 and 10,959.20

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Solution

The fourth proportional to 13,437.80, 20,132.40 and 10,959.20 is: 16,418.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.80 : 20,132.40 = 10,959.20 : x
  2. Step 2: Convert to fraction form
    13,437.80/20,132.40 = 10,959.20/x
  3. Step 3: Cross multiply
    13,437.80x = 20,132.40 × 10,959.20
  4. Step 4: Simplify right side
    13,437.80x = 220,634,998.08
  5. Step 5: Solve for x
    x = 220,634,998.08/13,437.80
  6. Step 6: Final answer
    x = 16,418.98

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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.