Home / 13,247.76-18,281.79-7,279.41

Finding the Fourth Proportional to 13,247.76, 18,281.79 and 7,279.41

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Solution

The fourth proportional to 13,247.76, 18,281.79 and 7,279.41 is: 10,045.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.76 : 18,281.79 = 7,279.41 : x
  2. Step 2: Convert to fraction form
    13,247.76/18,281.79 = 7,279.41/x
  3. Step 3: Cross multiply
    13,247.76x = 18,281.79 × 7,279.41
  4. Step 4: Simplify right side
    13,247.76x = 133,080,644.94
  5. Step 5: Solve for x
    x = 133,080,644.94/13,247.76
  6. Step 6: Final answer
    x = 10,045.52

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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.