Home / 28,657.38-39,547.34-15,910.76

Finding the Fourth Proportional to 28,657.38, 39,547.34 and 15,910.76

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Solution

The fourth proportional to 28,657.38, 39,547.34 and 15,910.76 is: 21,956.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,657.38 : 39,547.34 = 15,910.76 : x
  2. Step 2: Convert to fraction form
    28,657.38/39,547.34 = 15,910.76/x
  3. Step 3: Cross multiply
    28,657.38x = 39,547.34 × 15,910.76
  4. Step 4: Simplify right side
    28,657.38x = 629,228,235.38
  5. Step 5: Solve for x
    x = 629,228,235.38/28,657.38
  6. Step 6: Final answer
    x = 21,956.94

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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.