Home / 27,808.98-38,379.76-15,709.97

Finding the Fourth Proportional to 27,808.98, 38,379.76 and 15,709.97

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Solution

The fourth proportional to 27,808.98, 38,379.76 and 15,709.97 is: 21,681.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,808.98 : 38,379.76 = 15,709.97 : x
  2. Step 2: Convert to fraction form
    27,808.98/38,379.76 = 15,709.97/x
  3. Step 3: Cross multiply
    27,808.98x = 38,379.76 × 15,709.97
  4. Step 4: Simplify right side
    27,808.98x = 602,944,878.21
  5. Step 5: Solve for x
    x = 602,944,878.21/27,808.98
  6. Step 6: Final answer
    x = 21,681.66

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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.