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Finding the Fourth Proportional to 18,509.26, 27,719.40 and 10,587.76

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Solution

The fourth proportional to 18,509.26, 27,719.40 and 10,587.76 is: 15,856.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,509.26 : 27,719.40 = 10,587.76 : x
  2. Step 2: Convert to fraction form
    18,509.26/27,719.40 = 10,587.76/x
  3. Step 3: Cross multiply
    18,509.26x = 27,719.40 × 10,587.76
  4. Step 4: Simplify right side
    18,509.26x = 293,486,354.54
  5. Step 5: Solve for x
    x = 293,486,354.54/18,509.26
  6. Step 6: Final answer
    x = 15,856.19

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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.