Home / 15,393.19-21,242.57-8,319.60

Finding the Fourth Proportional to 15,393.19, 21,242.57 and 8,319.60

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Solution

The fourth proportional to 15,393.19, 21,242.57 and 8,319.60 is: 11,481.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,393.19 : 21,242.57 = 8,319.60 : x
  2. Step 2: Convert to fraction form
    15,393.19/21,242.57 = 8,319.60/x
  3. Step 3: Cross multiply
    15,393.19x = 21,242.57 × 8,319.60
  4. Step 4: Simplify right side
    15,393.19x = 176,729,579.16
  5. Step 5: Solve for x
    x = 176,729,579.16/15,393.19
  6. Step 6: Final answer
    x = 11,481.02

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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.