Home / 28,282.19-39,028.68-15,706.13

Finding the Fourth Proportional to 28,282.19, 39,028.68 and 15,706.13

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Solution

The fourth proportional to 28,282.19, 39,028.68 and 15,706.13 is: 21,674.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,282.19 : 39,028.68 = 15,706.13 : x
  2. Step 2: Convert to fraction form
    28,282.19/39,028.68 = 15,706.13/x
  3. Step 3: Cross multiply
    28,282.19x = 39,028.68 × 15,706.13
  4. Step 4: Simplify right side
    28,282.19x = 612,989,326.67
  5. Step 5: Solve for x
    x = 612,989,326.67/28,282.19
  6. Step 6: Final answer
    x = 21,674.04

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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.