Home / 19,421.66-29,134.16-8,325.72

Finding the Fourth Proportional to 19,421.66, 29,134.16 and 8,325.72

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Solution

The fourth proportional to 19,421.66, 29,134.16 and 8,325.72 is: 12,489.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,421.66 : 29,134.16 = 8,325.72 : x
  2. Step 2: Convert to fraction form
    19,421.66/29,134.16 = 8,325.72/x
  3. Step 3: Cross multiply
    19,421.66x = 29,134.16 × 8,325.72
  4. Step 4: Simplify right side
    19,421.66x = 242,562,816.97
  5. Step 5: Solve for x
    x = 242,562,816.97/19,421.66
  6. Step 6: Final answer
    x = 12,489.30

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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.