Home / 28,518.71-39,337.28-18,293.56

Finding the Fourth Proportional to 28,518.71, 39,337.28 and 18,293.56

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Solution

The fourth proportional to 28,518.71, 39,337.28 and 18,293.56 is: 25,233.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,518.71 : 39,337.28 = 18,293.56 : x
  2. Step 2: Convert to fraction form
    28,518.71/39,337.28 = 18,293.56/x
  3. Step 3: Cross multiply
    28,518.71x = 39,337.28 × 18,293.56
  4. Step 4: Simplify right side
    28,518.71x = 719,618,891.92
  5. Step 5: Solve for x
    x = 719,618,891.92/28,518.71
  6. Step 6: Final answer
    x = 25,233.22

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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.