Home / 28,260.12-38,999.16-15,684.87

Finding the Fourth Proportional to 28,260.12, 38,999.16 and 15,684.87

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Solution

The fourth proportional to 28,260.12, 38,999.16 and 15,684.87 is: 21,645.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,260.12 : 38,999.16 = 15,684.87 : x
  2. Step 2: Convert to fraction form
    28,260.12/38,999.16 = 15,684.87/x
  3. Step 3: Cross multiply
    28,260.12x = 38,999.16 × 15,684.87
  4. Step 4: Simplify right side
    28,260.12x = 611,696,754.71
  5. Step 5: Solve for x
    x = 611,696,754.71/28,260.12
  6. Step 6: Final answer
    x = 21,645.23

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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.