Home / 27,760.83-38,300.55-15,815.66

Finding the Fourth Proportional to 27,760.83, 38,300.55 and 15,815.66

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Solution

The fourth proportional to 27,760.83, 38,300.55 and 15,815.66 is: 21,820.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,760.83 : 38,300.55 = 15,815.66 : x
  2. Step 2: Convert to fraction form
    27,760.83/38,300.55 = 15,815.66/x
  3. Step 3: Cross multiply
    27,760.83x = 38,300.55 × 15,815.66
  4. Step 4: Simplify right side
    27,760.83x = 605,748,225.80
  5. Step 5: Solve for x
    x = 605,748,225.80/27,760.83
  6. Step 6: Final answer
    x = 21,820.25

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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.