Home / 28,169.72-38,876.19-15,595.28

Finding the Fourth Proportional to 28,169.72, 38,876.19 and 15,595.28

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Solution

The fourth proportional to 28,169.72, 38,876.19 and 15,595.28 is: 21,522.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,169.72 : 38,876.19 = 15,595.28 : x
  2. Step 2: Convert to fraction form
    28,169.72/38,876.19 = 15,595.28/x
  3. Step 3: Cross multiply
    28,169.72x = 38,876.19 × 15,595.28
  4. Step 4: Simplify right side
    28,169.72x = 606,285,068.38
  5. Step 5: Solve for x
    x = 606,285,068.38/28,169.72
  6. Step 6: Final answer
    x = 21,522.58

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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.