Home / 27,841.64-38,426.80-21,779.88

Finding the Fourth Proportional to 27,841.64, 38,426.80 and 21,779.88

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Solution

The fourth proportional to 27,841.64, 38,426.80 and 21,779.88 is: 30,060.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,841.64 : 38,426.80 = 21,779.88 : x
  2. Step 2: Convert to fraction form
    27,841.64/38,426.80 = 21,779.88/x
  3. Step 3: Cross multiply
    27,841.64x = 38,426.80 × 21,779.88
  4. Step 4: Simplify right side
    27,841.64x = 836,931,092.78
  5. Step 5: Solve for x
    x = 836,931,092.78/27,841.64
  6. Step 6: Final answer
    x = 30,060.41

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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.