Home / 11,156.27-15,395.49-6,440.45

Finding the Fourth Proportional to 11,156.27, 15,395.49 and 6,440.45

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Solution

The fourth proportional to 11,156.27, 15,395.49 and 6,440.45 is: 8,887.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.27 : 15,395.49 = 6,440.45 : x
  2. Step 2: Convert to fraction form
    11,156.27/15,395.49 = 6,440.45/x
  3. Step 3: Cross multiply
    11,156.27x = 15,395.49 × 6,440.45
  4. Step 4: Simplify right side
    11,156.27x = 99,153,883.57
  5. Step 5: Solve for x
    x = 99,153,883.57/11,156.27
  6. Step 6: Final answer
    x = 8,887.73

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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.