Home / 15,799.89-21,803.98-8,726.43

Finding the Fourth Proportional to 15,799.89, 21,803.98 and 8,726.43

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Solution

The fourth proportional to 15,799.89, 21,803.98 and 8,726.43 is: 12,042.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,799.89 : 21,803.98 = 8,726.43 : x
  2. Step 2: Convert to fraction form
    15,799.89/21,803.98 = 8,726.43/x
  3. Step 3: Cross multiply
    15,799.89x = 21,803.98 × 8,726.43
  4. Step 4: Simplify right side
    15,799.89x = 190,270,905.19
  5. Step 5: Solve for x
    x = 190,270,905.19/15,799.89
  6. Step 6: Final answer
    x = 12,042.55

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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.