Home / 13,247.47-19,879.57-7,407.91

Finding the Fourth Proportional to 13,247.47, 19,879.57 and 7,407.91

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Solution

The fourth proportional to 13,247.47, 19,879.57 and 7,407.91 is: 11,116.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.47 : 19,879.57 = 7,407.91 : x
  2. Step 2: Convert to fraction form
    13,247.47/19,879.57 = 7,407.91/x
  3. Step 3: Cross multiply
    13,247.47x = 19,879.57 × 7,407.91
  4. Step 4: Simplify right side
    13,247.47x = 147,266,065.40
  5. Step 5: Solve for x
    x = 147,266,065.40/13,247.47
  6. Step 6: Final answer
    x = 11,116.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.