Home / 12,325.12-17,009.10-7,020.76

Finding the Fourth Proportional to 12,325.12, 17,009.10 and 7,020.76

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Solution

The fourth proportional to 12,325.12, 17,009.10 and 7,020.76 is: 9,688.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,325.12 : 17,009.10 = 7,020.76 : x
  2. Step 2: Convert to fraction form
    12,325.12/17,009.10 = 7,020.76/x
  3. Step 3: Cross multiply
    12,325.12x = 17,009.10 × 7,020.76
  4. Step 4: Simplify right side
    12,325.12x = 119,416,808.92
  5. Step 5: Solve for x
    x = 119,416,808.92/12,325.12
  6. Step 6: Final answer
    x = 9,688.90

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Double scale
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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.