Home / 15,522.86-21,420.91-8,808.35

Finding the Fourth Proportional to 15,522.86, 21,420.91 and 8,808.35

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Solution

The fourth proportional to 15,522.86, 21,420.91 and 8,808.35 is: 12,155.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,522.86 : 21,420.91 = 8,808.35 : x
  2. Step 2: Convert to fraction form
    15,522.86/21,420.91 = 8,808.35/x
  3. Step 3: Cross multiply
    15,522.86x = 21,420.91 × 8,808.35
  4. Step 4: Simplify right side
    15,522.86x = 188,682,872.60
  5. Step 5: Solve for x
    x = 188,682,872.60/15,522.86
  6. Step 6: Final answer
    x = 12,155.16

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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.