Home / 27,579.12-38,063.08-15,645.40

Finding the Fourth Proportional to 27,579.12, 38,063.08 and 15,645.40

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Solution

The fourth proportional to 27,579.12, 38,063.08 and 15,645.40 is: 21,592.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,579.12 : 38,063.08 = 15,645.40 : x
  2. Step 2: Convert to fraction form
    27,579.12/38,063.08 = 15,645.40/x
  3. Step 3: Cross multiply
    27,579.12x = 38,063.08 × 15,645.40
  4. Step 4: Simplify right side
    27,579.12x = 595,512,111.83
  5. Step 5: Solve for x
    x = 595,512,111.83/27,579.12
  6. Step 6: Final answer
    x = 21,592.86

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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.