Home / 28,616.44-39,488.70-15,870.28

Finding the Fourth Proportional to 28,616.44, 39,488.70 and 15,870.28

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Solution

The fourth proportional to 28,616.44, 39,488.70 and 15,870.28 is: 21,899.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,616.44 : 39,488.70 = 15,870.28 : x
  2. Step 2: Convert to fraction form
    28,616.44/39,488.70 = 15,870.28/x
  3. Step 3: Cross multiply
    28,616.44x = 39,488.70 × 15,870.28
  4. Step 4: Simplify right side
    28,616.44x = 626,696,725.84
  5. Step 5: Solve for x
    x = 626,696,725.84/28,616.44
  6. Step 6: Final answer
    x = 21,899.88

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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.