Home / 21,375.23-29,478.65-17,802.05

Finding the Fourth Proportional to 21,375.23, 29,478.65 and 17,802.05

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Solution

The fourth proportional to 21,375.23, 29,478.65 and 17,802.05 is: 24,550.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375.23 : 29,478.65 = 17,802.05 : x
  2. Step 2: Convert to fraction form
    21,375.23/29,478.65 = 17,802.05/x
  3. Step 3: Cross multiply
    21,375.23x = 29,478.65 × 17,802.05
  4. Step 4: Simplify right side
    21,375.23x = 524,780,264.97
  5. Step 5: Solve for x
    x = 524,780,264.97/21,375.23
  6. Step 6: Final answer
    x = 24,550.87

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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.