Home / 20,948.16-31,421.28-6,157.44

Finding the Fourth Proportional to 20,948.16, 31,421.28 and 6,157.44

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Solution

The fourth proportional to 20,948.16, 31,421.28 and 6,157.44 is: 9,235.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.16 : 31,421.28 = 6,157.44 : x
  2. Step 2: Convert to fraction form
    20,948.16/31,421.28 = 6,157.44/x
  3. Step 3: Cross multiply
    20,948.16x = 31,421.28 × 6,157.44
  4. Step 4: Simplify right side
    20,948.16x = 193,474,646.32
  5. Step 5: Solve for x
    x = 193,474,646.32/20,948.16
  6. Step 6: Final answer
    x = 9,235.88

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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.