Home / 20,630.24-30,697.16-20,561.12

Finding the Fourth Proportional to 20,630.24, 30,697.16 and 20,561.12

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Solution

The fourth proportional to 20,630.24, 30,697.16 and 20,561.12 is: 30,594.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.24 : 30,697.16 = 20,561.12 : x
  2. Step 2: Convert to fraction form
    20,630.24/30,697.16 = 20,561.12/x
  3. Step 3: Cross multiply
    20,630.24x = 30,697.16 × 20,561.12
  4. Step 4: Simplify right side
    20,630.24x = 631,167,990.42
  5. Step 5: Solve for x
    x = 631,167,990.42/20,630.24
  6. Step 6: Final answer
    x = 30,594.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.