Home / 19,823.61-29,740.38-13,991.61

Finding the Fourth Proportional to 19,823.61, 29,740.38 and 13,991.61

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Solution

The fourth proportional to 19,823.61, 29,740.38 and 13,991.61 is: 20,990.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,823.61 : 29,740.38 = 13,991.61 : x
  2. Step 2: Convert to fraction form
    19,823.61/29,740.38 = 13,991.61/x
  3. Step 3: Cross multiply
    19,823.61x = 29,740.38 × 13,991.61
  4. Step 4: Simplify right side
    19,823.61x = 416,115,798.21
  5. Step 5: Solve for x
    x = 416,115,798.21/19,823.61
  6. Step 6: Final answer
    x = 20,990.92

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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.