Home / 19,766.79-29,661.12-8,088.21

Finding the Fourth Proportional to 19,766.79, 29,661.12 and 8,088.21

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Solution

The fourth proportional to 19,766.79, 29,661.12 and 8,088.21 is: 12,136.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,766.79 : 29,661.12 = 8,088.21 : x
  2. Step 2: Convert to fraction form
    19,766.79/29,661.12 = 8,088.21/x
  3. Step 3: Cross multiply
    19,766.79x = 29,661.12 × 8,088.21
  4. Step 4: Simplify right side
    19,766.79x = 239,905,367.40
  5. Step 5: Solve for x
    x = 239,905,367.40/19,766.79
  6. Step 6: Final answer
    x = 12,136.79

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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.