Home / 20,281.10-30,397.35-10,415.30

Finding the Fourth Proportional to 20,281.10, 30,397.35 and 10,415.30

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Solution

The fourth proportional to 20,281.10, 30,397.35 and 10,415.30 is: 15,610.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.10 : 30,397.35 = 10,415.30 : x
  2. Step 2: Convert to fraction form
    20,281.10/30,397.35 = 10,415.30/x
  3. Step 3: Cross multiply
    20,281.10x = 30,397.35 × 10,415.30
  4. Step 4: Simplify right side
    20,281.10x = 316,597,519.46
  5. Step 5: Solve for x
    x = 316,597,519.46/20,281.10
  6. Step 6: Final answer
    x = 15,610.47

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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.