Home / 18,214.40-27,328.16-7,129.04

Finding the Fourth Proportional to 18,214.40, 27,328.16 and 7,129.04

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Solution

The fourth proportional to 18,214.40, 27,328.16 and 7,129.04 is: 10,696.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,214.40 : 27,328.16 = 7,129.04 : x
  2. Step 2: Convert to fraction form
    18,214.40/27,328.16 = 7,129.04/x
  3. Step 3: Cross multiply
    18,214.40x = 27,328.16 × 7,129.04
  4. Step 4: Simplify right side
    18,214.40x = 194,823,545.77
  5. Step 5: Solve for x
    x = 194,823,545.77/18,214.40
  6. Step 6: Final answer
    x = 10,696.13

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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.