Home / 11,156.76-15,394.59-6,440.13

Finding the Fourth Proportional to 11,156.76, 15,394.59 and 6,440.13

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Solution

The fourth proportional to 11,156.76, 15,394.59 and 6,440.13 is: 8,886.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.76 : 15,394.59 = 6,440.13 : x
  2. Step 2: Convert to fraction form
    11,156.76/15,394.59 = 6,440.13/x
  3. Step 3: Cross multiply
    11,156.76x = 15,394.59 × 6,440.13
  4. Step 4: Simplify right side
    11,156.76x = 99,143,160.90
  5. Step 5: Solve for x
    x = 99,143,160.90/11,156.76
  6. Step 6: Final answer
    x = 8,886.38

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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.