Home / 28,081.84-38,752.76-15,506.56

Finding the Fourth Proportional to 28,081.84, 38,752.76 and 15,506.56

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Solution

The fourth proportional to 28,081.84, 38,752.76 and 15,506.56 is: 21,398.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.84 : 38,752.76 = 15,506.56 : x
  2. Step 2: Convert to fraction form
    28,081.84/38,752.76 = 15,506.56/x
  3. Step 3: Cross multiply
    28,081.84x = 38,752.76 × 15,506.56
  4. Step 4: Simplify right side
    28,081.84x = 600,921,998.11
  5. Step 5: Solve for x
    x = 600,921,998.11/28,081.84
  6. Step 6: Final answer
    x = 21,398.95

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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.