Home / 28,612.30-39,486-16,673.71

Finding the Fourth Proportional to 28,612.30, 39,486 and 16,673.71

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Solution

The fourth proportional to 28,612.30, 39,486 and 16,673.71 is: 23,010.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,612.30 : 39,486 = 16,673.71 : x
  2. Step 2: Convert to fraction form
    28,612.30/39,486 = 16,673.71/x
  3. Step 3: Cross multiply
    28,612.30x = 39,486 × 16,673.71
  4. Step 4: Simplify right side
    28,612.30x = 658,378,113.06
  5. Step 5: Solve for x
    x = 658,378,113.06/28,612.30
  6. Step 6: Final answer
    x = 23,010.32

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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.