Home / 27,853.11-38,439.33-15,916.20

Finding the Fourth Proportional to 27,853.11, 38,439.33 and 15,916.20

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Solution

The fourth proportional to 27,853.11, 38,439.33 and 15,916.20 is: 21,965.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,853.11 : 38,439.33 = 15,916.20 : x
  2. Step 2: Convert to fraction form
    27,853.11/38,439.33 = 15,916.20/x
  3. Step 3: Cross multiply
    27,853.11x = 38,439.33 × 15,916.20
  4. Step 4: Simplify right side
    27,853.11x = 611,808,064.15
  5. Step 5: Solve for x
    x = 611,808,064.15/27,853.11
  6. Step 6: Final answer
    x = 21,965.52

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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.