Home / 9,420.90-13,000.68-5,229.06

Finding the Fourth Proportional to 9,420.90, 13,000.68 and 5,229.06

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Solution

The fourth proportional to 9,420.90, 13,000.68 and 5,229.06 is: 7,216.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.90 : 13,000.68 = 5,229.06 : x
  2. Step 2: Convert to fraction form
    9,420.90/13,000.68 = 5,229.06/x
  3. Step 3: Cross multiply
    9,420.90x = 13,000.68 × 5,229.06
  4. Step 4: Simplify right side
    9,420.90x = 67,981,335.76
  5. Step 5: Solve for x
    x = 67,981,335.76/9,420.90
  6. Step 6: Final answer
    x = 7,216.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.