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Finding the Fourth Proportional to 27,888.66, 38,486.40 and 15,952.08

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Solution

The fourth proportional to 27,888.66, 38,486.40 and 15,952.08 is: 22,013.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,888.66 : 38,486.40 = 15,952.08 : x
  2. Step 2: Convert to fraction form
    27,888.66/38,486.40 = 15,952.08/x
  3. Step 3: Cross multiply
    27,888.66x = 38,486.40 × 15,952.08
  4. Step 4: Simplify right side
    27,888.66x = 613,938,131.71
  5. Step 5: Solve for x
    x = 613,938,131.71/27,888.66
  6. Step 6: Final answer
    x = 22,013.90

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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.