Home / 28,934.72-39,918.15-18,859.62

Finding the Fourth Proportional to 28,934.72, 39,918.15 and 18,859.62

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Solution

The fourth proportional to 28,934.72, 39,918.15 and 18,859.62 is: 26,018.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,934.72 : 39,918.15 = 18,859.62 : x
  2. Step 2: Convert to fraction form
    28,934.72/39,918.15 = 18,859.62/x
  3. Step 3: Cross multiply
    28,934.72x = 39,918.15 × 18,859.62
  4. Step 4: Simplify right side
    28,934.72x = 752,841,140.10
  5. Step 5: Solve for x
    x = 752,841,140.10/28,934.72
  6. Step 6: Final answer
    x = 26,018.61

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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.