Home / 27,988.24-38,616.36-15,888.72

Finding the Fourth Proportional to 27,988.24, 38,616.36 and 15,888.72

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Solution

The fourth proportional to 27,988.24, 38,616.36 and 15,888.72 is: 21,922.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,988.24 : 38,616.36 = 15,888.72 : x
  2. Step 2: Convert to fraction form
    27,988.24/38,616.36 = 15,888.72/x
  3. Step 3: Cross multiply
    27,988.24x = 38,616.36 × 15,888.72
  4. Step 4: Simplify right side
    27,988.24x = 613,564,531.46
  5. Step 5: Solve for x
    x = 613,564,531.46/27,988.24
  6. Step 6: Final answer
    x = 21,922.23

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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.