Home / 27,819.16-38,379.18-15,880.12

Finding the Fourth Proportional to 27,819.16, 38,379.18 and 15,880.12

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Solution

The fourth proportional to 27,819.16, 38,379.18 and 15,880.12 is: 21,908.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,819.16 : 38,379.18 = 15,880.12 : x
  2. Step 2: Convert to fraction form
    27,819.16/38,379.18 = 15,880.12/x
  3. Step 3: Cross multiply
    27,819.16x = 38,379.18 × 15,880.12
  4. Step 4: Simplify right side
    27,819.16x = 609,465,983.90
  5. Step 5: Solve for x
    x = 609,465,983.90/27,819.16
  6. Step 6: Final answer
    x = 21,908.14

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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.