Home / 20,506.08-28,298.94-11,553.06

Finding the Fourth Proportional to 20,506.08, 28,298.94 and 11,553.06

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Solution

The fourth proportional to 20,506.08, 28,298.94 and 11,553.06 is: 15,943.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.08 : 28,298.94 = 11,553.06 : x
  2. Step 2: Convert to fraction form
    20,506.08/28,298.94 = 11,553.06/x
  3. Step 3: Cross multiply
    20,506.08x = 28,298.94 × 11,553.06
  4. Step 4: Simplify right side
    20,506.08x = 326,939,351.76
  5. Step 5: Solve for x
    x = 326,939,351.76/20,506.08
  6. Step 6: Final answer
    x = 15,943.53

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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.