Home / 27,785.24-38,348.58-15,689.40

Finding the Fourth Proportional to 27,785.24, 38,348.58 and 15,689.40

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Solution

The fourth proportional to 27,785.24, 38,348.58 and 15,689.40 is: 21,654.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,785.24 : 38,348.58 = 15,689.40 : x
  2. Step 2: Convert to fraction form
    27,785.24/38,348.58 = 15,689.40/x
  3. Step 3: Cross multiply
    27,785.24x = 38,348.58 × 15,689.40
  4. Step 4: Simplify right side
    27,785.24x = 601,666,211.05
  5. Step 5: Solve for x
    x = 601,666,211.05/27,785.24
  6. Step 6: Final answer
    x = 21,654.17

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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.