Home / 28,164.86-38,864.08-22,436.90

Finding the Fourth Proportional to 28,164.86, 38,864.08 and 22,436.90

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Solution

The fourth proportional to 28,164.86, 38,864.08 and 22,436.90 is: 30,960.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,164.86 : 38,864.08 = 22,436.90 : x
  2. Step 2: Convert to fraction form
    28,164.86/38,864.08 = 22,436.90/x
  3. Step 3: Cross multiply
    28,164.86x = 38,864.08 × 22,436.90
  4. Step 4: Simplify right side
    28,164.86x = 871,989,476.55
  5. Step 5: Solve for x
    x = 871,989,476.55/28,164.86
  6. Step 6: Final answer
    x = 30,960.19

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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.