Home / 27,965.79-38,584.10-15,864.28

Finding the Fourth Proportional to 27,965.79, 38,584.10 and 15,864.28

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Solution

The fourth proportional to 27,965.79, 38,584.10 and 15,864.28 is: 21,887.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,965.79 : 38,584.10 = 15,864.28 : x
  2. Step 2: Convert to fraction form
    27,965.79/38,584.10 = 15,864.28/x
  3. Step 3: Cross multiply
    27,965.79x = 38,584.10 × 15,864.28
  4. Step 4: Simplify right side
    27,965.79x = 612,108,909.15
  5. Step 5: Solve for x
    x = 612,108,909.15/27,965.79
  6. Step 6: Final answer
    x = 21,887.77

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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.