Home / 27,945.12-38,563.38-15,369.78

Finding the Fourth Proportional to 27,945.12, 38,563.38 and 15,369.78

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Solution

The fourth proportional to 27,945.12, 38,563.38 and 15,369.78 is: 21,209.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,945.12 : 38,563.38 = 15,369.78 : x
  2. Step 2: Convert to fraction form
    27,945.12/38,563.38 = 15,369.78/x
  3. Step 3: Cross multiply
    27,945.12x = 38,563.38 × 15,369.78
  4. Step 4: Simplify right side
    27,945.12x = 592,710,666.66
  5. Step 5: Solve for x
    x = 592,710,666.66/27,945.12
  6. Step 6: Final answer
    x = 21,209.81

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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.