Home / 27,906-38,510.55-15,331.02

Finding the Fourth Proportional to 27,906, 38,510.55 and 15,331.02

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Solution

The fourth proportional to 27,906, 38,510.55 and 15,331.02 is: 21,156.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,906 : 38,510.55 = 15,331.02 : x
  2. Step 2: Convert to fraction form
    27,906/38,510.55 = 15,331.02/x
  3. Step 3: Cross multiply
    27,906x = 38,510.55 × 15,331.02
  4. Step 4: Simplify right side
    27,906x = 590,406,012.26
  5. Step 5: Solve for x
    x = 590,406,012.26/27,906
  6. Step 6: Final answer
    x = 21,156.96

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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.