Home / 40,830.80-61,246.20-13,131.60

Finding the Fourth Proportional to 40,830.80, 61,246.20 and 13,131.60

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Solution

The fourth proportional to 40,830.80, 61,246.20 and 13,131.60 is: 19,697.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,830.80 : 61,246.20 = 13,131.60 : x
  2. Step 2: Convert to fraction form
    40,830.80/61,246.20 = 13,131.60/x
  3. Step 3: Cross multiply
    40,830.80x = 61,246.20 × 13,131.60
  4. Step 4: Simplify right side
    40,830.80x = 804,260,599.92
  5. Step 5: Solve for x
    x = 804,260,599.92/40,830.80
  6. Step 6: Final answer
    x = 19,697.40

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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.