Home / 28,337.78-39,117.66-18,266.78

Finding the Fourth Proportional to 28,337.78, 39,117.66 and 18,266.78

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Solution

The fourth proportional to 28,337.78, 39,117.66 and 18,266.78 is: 25,215.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,337.78 : 39,117.66 = 18,266.78 : x
  2. Step 2: Convert to fraction form
    28,337.78/39,117.66 = 18,266.78/x
  3. Step 3: Cross multiply
    28,337.78x = 39,117.66 × 18,266.78
  4. Step 4: Simplify right side
    28,337.78x = 714,553,689.33
  5. Step 5: Solve for x
    x = 714,553,689.33/28,337.78
  6. Step 6: Final answer
    x = 25,215.58

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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.