Home / 27,868.62-38,490.64-18,351.05

Finding the Fourth Proportional to 27,868.62, 38,490.64 and 18,351.05

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Solution

The fourth proportional to 27,868.62, 38,490.64 and 18,351.05 is: 25,345.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,868.62 : 38,490.64 = 18,351.05 : x
  2. Step 2: Convert to fraction form
    27,868.62/38,490.64 = 18,351.05/x
  3. Step 3: Cross multiply
    27,868.62x = 38,490.64 × 18,351.05
  4. Step 4: Simplify right side
    27,868.62x = 706,343,709.52
  5. Step 5: Solve for x
    x = 706,343,709.52/27,868.62
  6. Step 6: Final answer
    x = 25,345.49

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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.