Home / 27,790.83-38,350.98-15,854.40

Finding the Fourth Proportional to 27,790.83, 38,350.98 and 15,854.40

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Solution

The fourth proportional to 27,790.83, 38,350.98 and 15,854.40 is: 21,878.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,790.83 : 38,350.98 = 15,854.40 : x
  2. Step 2: Convert to fraction form
    27,790.83/38,350.98 = 15,854.40/x
  3. Step 3: Cross multiply
    27,790.83x = 38,350.98 × 15,854.40
  4. Step 4: Simplify right side
    27,790.83x = 608,031,777.31
  5. Step 5: Solve for x
    x = 608,031,777.31/27,790.83
  6. Step 6: Final answer
    x = 21,878.86

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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.