Home / 28,859.28-39,821.40-18,263.40

Finding the Fourth Proportional to 28,859.28, 39,821.40 and 18,263.40

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Solution

The fourth proportional to 28,859.28, 39,821.40 and 18,263.40 is: 25,200.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,859.28 : 39,821.40 = 18,263.40 : x
  2. Step 2: Convert to fraction form
    28,859.28/39,821.40 = 18,263.40/x
  3. Step 3: Cross multiply
    28,859.28x = 39,821.40 × 18,263.40
  4. Step 4: Simplify right side
    28,859.28x = 727,274,156.76
  5. Step 5: Solve for x
    x = 727,274,156.76/28,859.28
  6. Step 6: Final answer
    x = 25,200.70

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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.