Home / 27,695.49-38,219.90-15,120.51

Finding the Fourth Proportional to 27,695.49, 38,219.90 and 15,120.51

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Solution

The fourth proportional to 27,695.49, 38,219.90 and 15,120.51 is: 20,866.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,695.49 : 38,219.90 = 15,120.51 : x
  2. Step 2: Convert to fraction form
    27,695.49/38,219.90 = 15,120.51/x
  3. Step 3: Cross multiply
    27,695.49x = 38,219.90 × 15,120.51
  4. Step 4: Simplify right side
    27,695.49x = 577,904,304.55
  5. Step 5: Solve for x
    x = 577,904,304.55/27,695.49
  6. Step 6: Final answer
    x = 20,866.37

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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.