Home / 12,971.56-19,458.08-4,207.20

Finding the Fourth Proportional to 12,971.56, 19,458.08 and 4,207.20

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Solution

The fourth proportional to 12,971.56, 19,458.08 and 4,207.20 is: 6,311.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,971.56 : 19,458.08 = 4,207.20 : x
  2. Step 2: Convert to fraction form
    12,971.56/19,458.08 = 4,207.20/x
  3. Step 3: Cross multiply
    12,971.56x = 19,458.08 × 4,207.20
  4. Step 4: Simplify right side
    12,971.56x = 81,864,034.18
  5. Step 5: Solve for x
    x = 81,864,034.18/12,971.56
  6. Step 6: Final answer
    x = 6,311.04

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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.