Home / 28,270.86-38,969.13-22,587.72

Finding the Fourth Proportional to 28,270.86, 38,969.13 and 22,587.72

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Solution

The fourth proportional to 28,270.86, 38,969.13 and 22,587.72 is: 31,135.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,270.86 : 38,969.13 = 22,587.72 : x
  2. Step 2: Convert to fraction form
    28,270.86/38,969.13 = 22,587.72/x
  3. Step 3: Cross multiply
    28,270.86x = 38,969.13 × 22,587.72
  4. Step 4: Simplify right side
    28,270.86x = 880,223,797.08
  5. Step 5: Solve for x
    x = 880,223,797.08/28,270.86
  6. Step 6: Final answer
    x = 31,135.37

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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.