Home / 20,509.02-30,741.66-8,660.34

Finding the Fourth Proportional to 20,509.02, 30,741.66 and 8,660.34

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Solution

The fourth proportional to 20,509.02, 30,741.66 and 8,660.34 is: 12,981.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,509.02 : 30,741.66 = 8,660.34 : x
  2. Step 2: Convert to fraction form
    20,509.02/30,741.66 = 8,660.34/x
  3. Step 3: Cross multiply
    20,509.02x = 30,741.66 × 8,660.34
  4. Step 4: Simplify right side
    20,509.02x = 266,233,227.76
  5. Step 5: Solve for x
    x = 266,233,227.76/20,509.02
  6. Step 6: Final answer
    x = 12,981.27

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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.