Home / 20,984.02-31,465.33-10,311.08

Finding the Fourth Proportional to 20,984.02, 31,465.33 and 10,311.08

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Solution

The fourth proportional to 20,984.02, 31,465.33 and 10,311.08 is: 15,461.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.02 : 31,465.33 = 10,311.08 : x
  2. Step 2: Convert to fraction form
    20,984.02/31,465.33 = 10,311.08/x
  3. Step 3: Cross multiply
    20,984.02x = 31,465.33 × 10,311.08
  4. Step 4: Simplify right side
    20,984.02x = 324,441,613.52
  5. Step 5: Solve for x
    x = 324,441,613.52/20,984.02
  6. Step 6: Final answer
    x = 15,461.37

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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.