Home / 21,866.76-30,195.18-17,142.84

Finding the Fourth Proportional to 21,866.76, 30,195.18 and 17,142.84

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Solution

The fourth proportional to 21,866.76, 30,195.18 and 17,142.84 is: 23,672.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,866.76 : 30,195.18 = 17,142.84 : x
  2. Step 2: Convert to fraction form
    21,866.76/30,195.18 = 17,142.84/x
  3. Step 3: Cross multiply
    21,866.76x = 30,195.18 × 17,142.84
  4. Step 4: Simplify right side
    21,866.76x = 517,631,139.51
  5. Step 5: Solve for x
    x = 517,631,139.51/21,866.76
  6. Step 6: Final answer
    x = 23,672.05

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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.