Home / 52,990.20-79,485.30-13,550.40

Finding the Fourth Proportional to 52,990.20, 79,485.30 and 13,550.40

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Solution

The fourth proportional to 52,990.20, 79,485.30 and 13,550.40 is: 20,325.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,990.20 : 79,485.30 = 13,550.40 : x
  2. Step 2: Convert to fraction form
    52,990.20/79,485.30 = 13,550.40/x
  3. Step 3: Cross multiply
    52,990.20x = 79,485.30 × 13,550.40
  4. Step 4: Simplify right side
    52,990.20x = 1,077,057,609.12
  5. Step 5: Solve for x
    x = 1,077,057,609.12/52,990.20
  6. Step 6: Final answer
    x = 20,325.60

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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.