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Finding the Fourth Proportional to 12,325.92, 17,009.80 and 7,020.76

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Solution

The fourth proportional to 12,325.92, 17,009.80 and 7,020.76 is: 9,688.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,325.92 : 17,009.80 = 7,020.76 : x
  2. Step 2: Convert to fraction form
    12,325.92/17,009.80 = 7,020.76/x
  3. Step 3: Cross multiply
    12,325.92x = 17,009.80 × 7,020.76
  4. Step 4: Simplify right side
    12,325.92x = 119,421,695.26
  5. Step 5: Solve for x
    x = 119,421,695.26/12,325.92
  6. Step 6: Final answer
    x = 9,688.66

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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.