Home / 15,856.36-23,821-11,187.12

Finding the Fourth Proportional to 15,856.36, 23,821 and 11,187.12

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Solution

The fourth proportional to 15,856.36, 23,821 and 11,187.12 is: 16,806.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,856.36 : 23,821 = 11,187.12 : x
  2. Step 2: Convert to fraction form
    15,856.36/23,821 = 11,187.12/x
  3. Step 3: Cross multiply
    15,856.36x = 23,821 × 11,187.12
  4. Step 4: Simplify right side
    15,856.36x = 266,488,385.52
  5. Step 5: Solve for x
    x = 266,488,385.52/15,856.36
  6. Step 6: Final answer
    x = 16,806.40

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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.