Home / 39,920.45-59,886.14-13,618.13

Finding the Fourth Proportional to 39,920.45, 59,886.14 and 13,618.13

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Solution

The fourth proportional to 39,920.45, 59,886.14 and 13,618.13 is: 20,429.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,920.45 : 59,886.14 = 13,618.13 : x
  2. Step 2: Convert to fraction form
    39,920.45/59,886.14 = 13,618.13/x
  3. Step 3: Cross multiply
    39,920.45x = 59,886.14 × 13,618.13
  4. Step 4: Simplify right side
    39,920.45x = 815,536,872.20
  5. Step 5: Solve for x
    x = 815,536,872.20/39,920.45
  6. Step 6: Final answer
    x = 20,429.05

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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.