Home / 37,685.12-52,006.32-20,919.20

Finding the Fourth Proportional to 37,685.12, 52,006.32 and 20,919.20

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Solution

The fourth proportional to 37,685.12, 52,006.32 and 20,919.20 is: 28,868.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,685.12 : 52,006.32 = 20,919.20 : x
  2. Step 2: Convert to fraction form
    37,685.12/52,006.32 = 20,919.20/x
  3. Step 3: Cross multiply
    37,685.12x = 52,006.32 × 20,919.20
  4. Step 4: Simplify right side
    37,685.12x = 1,087,930,609.34
  5. Step 5: Solve for x
    x = 1,087,930,609.34/37,685.12
  6. Step 6: Final answer
    x = 28,868.97

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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.