Home / 29,147.20-43,655.02-20,421.06

Finding the Fourth Proportional to 29,147.20, 43,655.02 and 20,421.06

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Solution

The fourth proportional to 29,147.20, 43,655.02 and 20,421.06 is: 30,585.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,147.20 : 43,655.02 = 20,421.06 : x
  2. Step 2: Convert to fraction form
    29,147.20/43,655.02 = 20,421.06/x
  3. Step 3: Cross multiply
    29,147.20x = 43,655.02 × 20,421.06
  4. Step 4: Simplify right side
    29,147.20x = 891,481,782.72
  5. Step 5: Solve for x
    x = 891,481,782.72/29,147.20
  6. Step 6: Final answer
    x = 30,585.50

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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.