Home / 15,965.09-22,031.86-8,891.49

Finding the Fourth Proportional to 15,965.09, 22,031.86 and 8,891.49

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Solution

The fourth proportional to 15,965.09, 22,031.86 and 8,891.49 is: 12,270.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,965.09 : 22,031.86 = 8,891.49 : x
  2. Step 2: Convert to fraction form
    15,965.09/22,031.86 = 8,891.49/x
  3. Step 3: Cross multiply
    15,965.09x = 22,031.86 × 8,891.49
  4. Step 4: Simplify right side
    15,965.09x = 195,896,062.87
  5. Step 5: Solve for x
    x = 195,896,062.87/15,965.09
  6. Step 6: Final answer
    x = 12,270.28

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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.