Home / 15,393.28-21,242.88-8,319.84

Finding the Fourth Proportional to 15,393.28, 21,242.88 and 8,319.84

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Solution

The fourth proportional to 15,393.28, 21,242.88 and 8,319.84 is: 11,481.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,393.28 : 21,242.88 = 8,319.84 : x
  2. Step 2: Convert to fraction form
    15,393.28/21,242.88 = 8,319.84/x
  3. Step 3: Cross multiply
    15,393.28x = 21,242.88 × 8,319.84
  4. Step 4: Simplify right side
    15,393.28x = 176,737,362.74
  5. Step 5: Solve for x
    x = 176,737,362.74/15,393.28
  6. Step 6: Final answer
    x = 11,481.46

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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.