Home / 11,391.76-15,718.08-8,565.94

Finding the Fourth Proportional to 11,391.76, 15,718.08 and 8,565.94

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Solution

The fourth proportional to 11,391.76, 15,718.08 and 8,565.94 is: 11,819.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.76 : 15,718.08 = 8,565.94 : x
  2. Step 2: Convert to fraction form
    11,391.76/15,718.08 = 8,565.94/x
  3. Step 3: Cross multiply
    11,391.76x = 15,718.08 × 8,565.94
  4. Step 4: Simplify right side
    11,391.76x = 134,640,130.20
  5. Step 5: Solve for x
    x = 134,640,130.20/11,391.76
  6. Step 6: Final answer
    x = 11,819.08

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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.