Home / 20,994.27-28,969.95-12,926.65

Finding the Fourth Proportional to 20,994.27, 28,969.95 and 12,926.65

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Solution

The fourth proportional to 20,994.27, 28,969.95 and 12,926.65 is: 17,837.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,994.27 : 28,969.95 = 12,926.65 : x
  2. Step 2: Convert to fraction form
    20,994.27/28,969.95 = 12,926.65/x
  3. Step 3: Cross multiply
    20,994.27x = 28,969.95 × 12,926.65
  4. Step 4: Simplify right side
    20,994.27x = 374,484,404.17
  5. Step 5: Solve for x
    x = 374,484,404.17/20,994.27
  6. Step 6: Final answer
    x = 17,837.46

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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.