Home / 27,779.80-38,336.58-15,680.92

Finding the Fourth Proportional to 27,779.80, 38,336.58 and 15,680.92

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Solution

The fourth proportional to 27,779.80, 38,336.58 and 15,680.92 is: 21,639.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,779.80 : 38,336.58 = 15,680.92 : x
  2. Step 2: Convert to fraction form
    27,779.80/38,336.58 = 15,680.92/x
  3. Step 3: Cross multiply
    27,779.80x = 38,336.58 × 15,680.92
  4. Step 4: Simplify right side
    27,779.80x = 601,152,844.05
  5. Step 5: Solve for x
    x = 601,152,844.05/27,779.80
  6. Step 6: Final answer
    x = 21,639.93

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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.