Home / 19,857.12-29,781.12-5,813.52

Finding the Fourth Proportional to 19,857.12, 29,781.12 and 5,813.52

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Solution

The fourth proportional to 19,857.12, 29,781.12 and 5,813.52 is: 8,718.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,857.12 : 29,781.12 = 5,813.52 : x
  2. Step 2: Convert to fraction form
    19,857.12/29,781.12 = 5,813.52/x
  3. Step 3: Cross multiply
    19,857.12x = 29,781.12 × 5,813.52
  4. Step 4: Simplify right side
    19,857.12x = 173,133,136.74
  5. Step 5: Solve for x
    x = 173,133,136.74/19,857.12
  6. Step 6: Final answer
    x = 8,718.94

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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.