Home / 22,220.45-30,664.71-13,266.29

Finding the Fourth Proportional to 22,220.45, 30,664.71 and 13,266.29

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Solution

The fourth proportional to 22,220.45, 30,664.71 and 13,266.29 is: 18,307.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,220.45 : 30,664.71 = 13,266.29 : x
  2. Step 2: Convert to fraction form
    22,220.45/30,664.71 = 13,266.29/x
  3. Step 3: Cross multiply
    22,220.45x = 30,664.71 × 13,266.29
  4. Step 4: Simplify right side
    22,220.45x = 406,806,839.80
  5. Step 5: Solve for x
    x = 406,806,839.80/22,220.45
  6. Step 6: Final answer
    x = 18,307.76

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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.