Home / 20,118.36-30,191.40-9,037.47

Finding the Fourth Proportional to 20,118.36, 30,191.40 and 9,037.47

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Solution

The fourth proportional to 20,118.36, 30,191.40 and 9,037.47 is: 13,562.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.36 : 30,191.40 = 9,037.47 : x
  2. Step 2: Convert to fraction form
    20,118.36/30,191.40 = 9,037.47/x
  3. Step 3: Cross multiply
    20,118.36x = 30,191.40 × 9,037.47
  4. Step 4: Simplify right side
    20,118.36x = 272,853,871.76
  5. Step 5: Solve for x
    x = 272,853,871.76/20,118.36
  6. Step 6: Final answer
    x = 13,562.43

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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.