Home / 15,549.75-21,458.67-8,476.20

Finding the Fourth Proportional to 15,549.75, 21,458.67 and 8,476.20

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Solution

The fourth proportional to 15,549.75, 21,458.67 and 8,476.20 is: 11,697.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,549.75 : 21,458.67 = 8,476.20 : x
  2. Step 2: Convert to fraction form
    15,549.75/21,458.67 = 8,476.20/x
  3. Step 3: Cross multiply
    15,549.75x = 21,458.67 × 8,476.20
  4. Step 4: Simplify right side
    15,549.75x = 181,887,978.65
  5. Step 5: Solve for x
    x = 181,887,978.65/15,549.75
  6. Step 6: Final answer
    x = 11,697.16

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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.