Home / 18,721.12-25,869.36-17,809.96

Finding the Fourth Proportional to 18,721.12, 25,869.36 and 17,809.96

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Solution

The fourth proportional to 18,721.12, 25,869.36 and 17,809.96 is: 24,610.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.12 : 25,869.36 = 17,809.96 : x
  2. Step 2: Convert to fraction form
    18,721.12/25,869.36 = 17,809.96/x
  3. Step 3: Cross multiply
    18,721.12x = 25,869.36 × 17,809.96
  4. Step 4: Simplify right side
    18,721.12x = 460,732,266.83
  5. Step 5: Solve for x
    x = 460,732,266.83/18,721.12
  6. Step 6: Final answer
    x = 24,610.29

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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.