Home / 20,939.72-28,926.20-19,047.96

Finding the Fourth Proportional to 20,939.72, 28,926.20 and 19,047.96

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Solution

The fourth proportional to 20,939.72, 28,926.20 and 19,047.96 is: 26,312.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,939.72 : 28,926.20 = 19,047.96 : x
  2. Step 2: Convert to fraction form
    20,939.72/28,926.20 = 19,047.96/x
  3. Step 3: Cross multiply
    20,939.72x = 28,926.20 × 19,047.96
  4. Step 4: Simplify right side
    20,939.72x = 550,985,041.03
  5. Step 5: Solve for x
    x = 550,985,041.03/20,939.72
  6. Step 6: Final answer
    x = 26,312.92

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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.