Home / 28,717.12-39,630.09-17,386.48

Finding the Fourth Proportional to 28,717.12, 39,630.09 and 17,386.48

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Solution

The fourth proportional to 28,717.12, 39,630.09 and 17,386.48 is: 23,993.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,717.12 : 39,630.09 = 17,386.48 : x
  2. Step 2: Convert to fraction form
    28,717.12/39,630.09 = 17,386.48/x
  3. Step 3: Cross multiply
    28,717.12x = 39,630.09 × 17,386.48
  4. Step 4: Simplify right side
    28,717.12x = 689,027,767.18
  5. Step 5: Solve for x
    x = 689,027,767.18/28,717.12
  6. Step 6: Final answer
    x = 23,993.62

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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.