Home / 13,820.61-19,081.40-9,520.95

Finding the Fourth Proportional to 13,820.61, 19,081.40 and 9,520.95

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Solution

The fourth proportional to 13,820.61, 19,081.40 and 9,520.95 is: 13,145.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.61 : 19,081.40 = 9,520.95 : x
  2. Step 2: Convert to fraction form
    13,820.61/19,081.40 = 9,520.95/x
  3. Step 3: Cross multiply
    13,820.61x = 19,081.40 × 9,520.95
  4. Step 4: Simplify right side
    13,820.61x = 181,673,007.73
  5. Step 5: Solve for x
    x = 181,673,007.73/13,820.61
  6. Step 6: Final answer
    x = 13,145.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.