Home / 19,329.44-29,042.75-12,312.61

Finding the Fourth Proportional to 19,329.44, 29,042.75 and 12,312.61

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Solution

The fourth proportional to 19,329.44, 29,042.75 and 12,312.61 is: 18,499.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,329.44 : 29,042.75 = 12,312.61 : x
  2. Step 2: Convert to fraction form
    19,329.44/29,042.75 = 12,312.61/x
  3. Step 3: Cross multiply
    19,329.44x = 29,042.75 × 12,312.61
  4. Step 4: Simplify right side
    19,329.44x = 357,592,012.25
  5. Step 5: Solve for x
    x = 357,592,012.25/19,329.44
  6. Step 6: Final answer
    x = 18,499.87

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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.