Home / 15,319.60-21,143.03-8,605.23

Finding the Fourth Proportional to 15,319.60, 21,143.03 and 8,605.23

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Solution

The fourth proportional to 15,319.60, 21,143.03 and 8,605.23 is: 11,876.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,319.60 : 21,143.03 = 8,605.23 : x
  2. Step 2: Convert to fraction form
    15,319.60/21,143.03 = 8,605.23/x
  3. Step 3: Cross multiply
    15,319.60x = 21,143.03 × 8,605.23
  4. Step 4: Simplify right side
    15,319.60x = 181,940,513.73
  5. Step 5: Solve for x
    x = 181,940,513.73/15,319.60
  6. Step 6: Final answer
    x = 11,876.32

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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.