Home / 20,887.24-28,823.54-12,498.76

Finding the Fourth Proportional to 20,887.24, 28,823.54 and 12,498.76

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Solution

The fourth proportional to 20,887.24, 28,823.54 and 12,498.76 is: 17,247.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.24 : 28,823.54 = 12,498.76 : x
  2. Step 2: Convert to fraction form
    20,887.24/28,823.54 = 12,498.76/x
  3. Step 3: Cross multiply
    20,887.24x = 28,823.54 × 12,498.76
  4. Step 4: Simplify right side
    20,887.24x = 360,258,508.81
  5. Step 5: Solve for x
    x = 360,258,508.81/20,887.24
  6. Step 6: Final answer
    x = 17,247.78

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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.