Home / 15,825.12-21,838.88-8,751.48

Finding the Fourth Proportional to 15,825.12, 21,838.88 and 8,751.48

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Solution

The fourth proportional to 15,825.12, 21,838.88 and 8,751.48 is: 12,077.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,825.12 : 21,838.88 = 8,751.48 : x
  2. Step 2: Convert to fraction form
    15,825.12/21,838.88 = 8,751.48/x
  3. Step 3: Cross multiply
    15,825.12x = 21,838.88 × 8,751.48
  4. Step 4: Simplify right side
    15,825.12x = 191,122,521.54
  5. Step 5: Solve for x
    x = 191,122,521.54/15,825.12
  6. Step 6: Final answer
    x = 12,077.16

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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.