Home / 13,247.45-18,281.47-7,279.50

Finding the Fourth Proportional to 13,247.45, 18,281.47 and 7,279.50

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Solution

The fourth proportional to 13,247.45, 18,281.47 and 7,279.50 is: 10,045.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.45 : 18,281.47 = 7,279.50 : x
  2. Step 2: Convert to fraction form
    13,247.45/18,281.47 = 7,279.50/x
  3. Step 3: Cross multiply
    13,247.45x = 18,281.47 × 7,279.50
  4. Step 4: Simplify right side
    13,247.45x = 133,079,968.22
  5. Step 5: Solve for x
    x = 133,079,968.22/13,247.45
  6. Step 6: Final answer
    x = 10,045.71

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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.