Home / 15,393.06-21,242.52-8,319.47

Finding the Fourth Proportional to 15,393.06, 21,242.52 and 8,319.47

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Solution

The fourth proportional to 15,393.06, 21,242.52 and 8,319.47 is: 11,480.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,393.06 : 21,242.52 = 8,319.47 : x
  2. Step 2: Convert to fraction form
    15,393.06/21,242.52 = 8,319.47/x
  3. Step 3: Cross multiply
    15,393.06x = 21,242.52 × 8,319.47
  4. Step 4: Simplify right side
    15,393.06x = 176,726,401.65
  5. Step 5: Solve for x
    x = 176,726,401.65/15,393.06
  6. Step 6: Final answer
    x = 11,480.91

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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.