Home / 28,954.28-39,955.20-18,901.64

Finding the Fourth Proportional to 28,954.28, 39,955.20 and 18,901.64

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Solution

The fourth proportional to 28,954.28, 39,955.20 and 18,901.64 is: 26,083.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,954.28 : 39,955.20 = 18,901.64 : x
  2. Step 2: Convert to fraction form
    28,954.28/39,955.20 = 18,901.64/x
  3. Step 3: Cross multiply
    28,954.28x = 39,955.20 × 18,901.64
  4. Step 4: Simplify right side
    28,954.28x = 755,218,806.53
  5. Step 5: Solve for x
    x = 755,218,806.53/28,954.28
  6. Step 6: Final answer
    x = 26,083.15

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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.