Home / 43,870.20-65,729.70-20,448.60

Finding the Fourth Proportional to 43,870.20, 65,729.70 and 20,448.60

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Solution

The fourth proportional to 43,870.20, 65,729.70 and 20,448.60 is: 30,637.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,870.20 : 65,729.70 = 20,448.60 : x
  2. Step 2: Convert to fraction form
    43,870.20/65,729.70 = 20,448.60/x
  3. Step 3: Cross multiply
    43,870.20x = 65,729.70 × 20,448.60
  4. Step 4: Simplify right side
    43,870.20x = 1,344,080,343.42
  5. Step 5: Solve for x
    x = 1,344,080,343.42/43,870.20
  6. Step 6: Final answer
    x = 30,637.66

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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.