Home / 28,301.88-39,017.56-22,578.76

Finding the Fourth Proportional to 28,301.88, 39,017.56 and 22,578.76

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Solution

The fourth proportional to 28,301.88, 39,017.56 and 22,578.76 is: 31,127.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,301.88 : 39,017.56 = 22,578.76 : x
  2. Step 2: Convert to fraction form
    28,301.88/39,017.56 = 22,578.76/x
  3. Step 3: Cross multiply
    28,301.88x = 39,017.56 × 22,578.76
  4. Step 4: Simplify right side
    28,301.88x = 880,968,123.03
  5. Step 5: Solve for x
    x = 880,968,123.03/28,301.88
  6. Step 6: Final answer
    x = 31,127.55

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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.