Home / 19,931.36-29,899.47-8,252.78

Finding the Fourth Proportional to 19,931.36, 29,899.47 and 8,252.78

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Solution

The fourth proportional to 19,931.36, 29,899.47 and 8,252.78 is: 12,380.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,931.36 : 29,899.47 = 8,252.78 : x
  2. Step 2: Convert to fraction form
    19,931.36/29,899.47 = 8,252.78/x
  3. Step 3: Cross multiply
    19,931.36x = 29,899.47 × 8,252.78
  4. Step 4: Simplify right side
    19,931.36x = 246,753,748.03
  5. Step 5: Solve for x
    x = 246,753,748.03/19,931.36
  6. Step 6: Final answer
    x = 12,380.18

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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.