Home / 19,869.84-27,432.42-13,161.22

Finding the Fourth Proportional to 19,869.84, 27,432.42 and 13,161.22

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Solution

The fourth proportional to 19,869.84, 27,432.42 and 13,161.22 is: 18,170.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.84 : 27,432.42 = 13,161.22 : x
  2. Step 2: Convert to fraction form
    19,869.84/27,432.42 = 13,161.22/x
  3. Step 3: Cross multiply
    19,869.84x = 27,432.42 × 13,161.22
  4. Step 4: Simplify right side
    19,869.84x = 361,044,114.75
  5. Step 5: Solve for x
    x = 361,044,114.75/19,869.84
  6. Step 6: Final answer
    x = 18,170.46

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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.