Home / 28,346.68-39,105.33-18,278.35

Finding the Fourth Proportional to 28,346.68, 39,105.33 and 18,278.35

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Solution

The fourth proportional to 28,346.68, 39,105.33 and 18,278.35 is: 25,215.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,346.68 : 39,105.33 = 18,278.35 : x
  2. Step 2: Convert to fraction form
    28,346.68/39,105.33 = 18,278.35/x
  3. Step 3: Cross multiply
    28,346.68x = 39,105.33 × 18,278.35
  4. Step 4: Simplify right side
    28,346.68x = 714,780,908.61
  5. Step 5: Solve for x
    x = 714,780,908.61/28,346.68
  6. Step 6: Final answer
    x = 25,215.68

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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.