Home / 19,612.88-29,402.79-8,511.21

Finding the Fourth Proportional to 19,612.88, 29,402.79 and 8,511.21

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Solution

The fourth proportional to 19,612.88, 29,402.79 and 8,511.21 is: 12,759.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,612.88 : 29,402.79 = 8,511.21 : x
  2. Step 2: Convert to fraction form
    19,612.88/29,402.79 = 8,511.21/x
  3. Step 3: Cross multiply
    19,612.88x = 29,402.79 × 8,511.21
  4. Step 4: Simplify right side
    19,612.88x = 250,253,130.71
  5. Step 5: Solve for x
    x = 250,253,130.71/19,612.88
  6. Step 6: Final answer
    x = 12,759.64

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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.