Home / 11,439.76-15,785.40-6,722.32

Finding the Fourth Proportional to 11,439.76, 15,785.40 and 6,722.32

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Solution

The fourth proportional to 11,439.76, 15,785.40 and 6,722.32 is: 9,275.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.76 : 15,785.40 = 6,722.32 : x
  2. Step 2: Convert to fraction form
    11,439.76/15,785.40 = 6,722.32/x
  3. Step 3: Cross multiply
    11,439.76x = 15,785.40 × 6,722.32
  4. Step 4: Simplify right side
    11,439.76x = 106,114,510.13
  5. Step 5: Solve for x
    x = 106,114,510.13/11,439.76
  6. Step 6: Final answer
    x = 9,275.94

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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.