Home / 27,864.81-38,453.27-15,117.98

Finding the Fourth Proportional to 27,864.81, 38,453.27 and 15,117.98

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Solution

The fourth proportional to 27,864.81, 38,453.27 and 15,117.98 is: 20,862.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,864.81 : 38,453.27 = 15,117.98 : x
  2. Step 2: Convert to fraction form
    27,864.81/38,453.27 = 15,117.98/x
  3. Step 3: Cross multiply
    27,864.81x = 38,453.27 × 15,117.98
  4. Step 4: Simplify right side
    27,864.81x = 581,335,498.94
  5. Step 5: Solve for x
    x = 581,335,498.94/27,864.81
  6. Step 6: Final answer
    x = 20,862.71

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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.