Home / 20,352.06-30,509.85-8,658.90

Finding the Fourth Proportional to 20,352.06, 30,509.85 and 8,658.90

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Solution

The fourth proportional to 20,352.06, 30,509.85 and 8,658.90 is: 12,980.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,352.06 : 30,509.85 = 8,658.90 : x
  2. Step 2: Convert to fraction form
    20,352.06/30,509.85 = 8,658.90/x
  3. Step 3: Cross multiply
    20,352.06x = 30,509.85 × 8,658.90
  4. Step 4: Simplify right side
    20,352.06x = 264,181,740.17
  5. Step 5: Solve for x
    x = 264,181,740.17/20,352.06
  6. Step 6: Final answer
    x = 12,980.59

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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.