Home / 27,785.78-38,344.38-15,210.53

Finding the Fourth Proportional to 27,785.78, 38,344.38 and 15,210.53

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Solution

The fourth proportional to 27,785.78, 38,344.38 and 15,210.53 is: 20,990.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,785.78 : 38,344.38 = 15,210.53 : x
  2. Step 2: Convert to fraction form
    27,785.78/38,344.38 = 15,210.53/x
  3. Step 3: Cross multiply
    27,785.78x = 38,344.38 × 15,210.53
  4. Step 4: Simplify right side
    27,785.78x = 583,238,400.16
  5. Step 5: Solve for x
    x = 583,238,400.16/27,785.78
  6. Step 6: Final answer
    x = 20,990.53

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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.