Home / 27,913.68-38,520.60-15,338.16

Finding the Fourth Proportional to 27,913.68, 38,520.60 and 15,338.16

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Solution

The fourth proportional to 27,913.68, 38,520.60 and 15,338.16 is: 21,166.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,913.68 : 38,520.60 = 15,338.16 : x
  2. Step 2: Convert to fraction form
    27,913.68/38,520.60 = 15,338.16/x
  3. Step 3: Cross multiply
    27,913.68x = 38,520.60 × 15,338.16
  4. Step 4: Simplify right side
    27,913.68x = 590,835,126.10
  5. Step 5: Solve for x
    x = 590,835,126.10/27,913.68
  6. Step 6: Final answer
    x = 21,166.51

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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.