Home / 28,279.80-39,021.77-16,340.83

Finding the Fourth Proportional to 28,279.80, 39,021.77 and 16,340.83

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Solution

The fourth proportional to 28,279.80, 39,021.77 and 16,340.83 is: 22,547.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,279.80 : 39,021.77 = 16,340.83 : x
  2. Step 2: Convert to fraction form
    28,279.80/39,021.77 = 16,340.83/x
  3. Step 3: Cross multiply
    28,279.80x = 39,021.77 × 16,340.83
  4. Step 4: Simplify right side
    28,279.80x = 637,648,053.17
  5. Step 5: Solve for x
    x = 637,648,053.17/28,279.80
  6. Step 6: Final answer
    x = 22,547.83

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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.