Home / 12,325.20-17,008.38-7,021.32

Finding the Fourth Proportional to 12,325.20, 17,008.38 and 7,021.32

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Solution

The fourth proportional to 12,325.20, 17,008.38 and 7,021.32 is: 9,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,325.20 : 17,008.38 = 7,021.32 : x
  2. Step 2: Convert to fraction form
    12,325.20/17,008.38 = 7,021.32/x
  3. Step 3: Cross multiply
    12,325.20x = 17,008.38 × 7,021.32
  4. Step 4: Simplify right side
    12,325.20x = 119,421,278.66
  5. Step 5: Solve for x
    x = 119,421,278.66/12,325.20
  6. Step 6: Final answer
    x = 9,689.20

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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.