Home / 20,586.06-28,408.73-11,154.62

Finding the Fourth Proportional to 20,586.06, 28,408.73 and 11,154.62

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Solution

The fourth proportional to 20,586.06, 28,408.73 and 11,154.62 is: 15,393.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.06 : 28,408.73 = 11,154.62 : x
  2. Step 2: Convert to fraction form
    20,586.06/28,408.73 = 11,154.62/x
  3. Step 3: Cross multiply
    20,586.06x = 28,408.73 × 11,154.62
  4. Step 4: Simplify right side
    20,586.06x = 316,888,603.08
  5. Step 5: Solve for x
    x = 316,888,603.08/20,586.06
  6. Step 6: Final answer
    x = 15,393.36

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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.