Home / 20,886.17-28,826.53-15,841.95

Finding the Fourth Proportional to 20,886.17, 28,826.53 and 15,841.95

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Solution

The fourth proportional to 20,886.17, 28,826.53 and 15,841.95 is: 21,864.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.17 : 28,826.53 = 15,841.95 : x
  2. Step 2: Convert to fraction form
    20,886.17/28,826.53 = 15,841.95/x
  3. Step 3: Cross multiply
    20,886.17x = 28,826.53 × 15,841.95
  4. Step 4: Simplify right side
    20,886.17x = 456,668,388.34
  5. Step 5: Solve for x
    x = 456,668,388.34/20,886.17
  6. Step 6: Final answer
    x = 21,864.63

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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.