Home / 40,984.20-61,461.90-18,808.20

Finding the Fourth Proportional to 40,984.20, 61,461.90 and 18,808.20

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Solution

The fourth proportional to 40,984.20, 61,461.90 and 18,808.20 is: 28,205.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,984.20 : 61,461.90 = 18,808.20 : x
  2. Step 2: Convert to fraction form
    40,984.20/61,461.90 = 18,808.20/x
  3. Step 3: Cross multiply
    40,984.20x = 61,461.90 × 18,808.20
  4. Step 4: Simplify right side
    40,984.20x = 1,155,987,707.58
  5. Step 5: Solve for x
    x = 1,155,987,707.58/40,984.20
  6. Step 6: Final answer
    x = 28,205.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.