Home / 11,442.50-15,788.56-6,406.80

Finding the Fourth Proportional to 11,442.50, 15,788.56 and 6,406.80

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Solution

The fourth proportional to 11,442.50, 15,788.56 and 6,406.80 is: 8,840.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,442.50 : 15,788.56 = 6,406.80 : x
  2. Step 2: Convert to fraction form
    11,442.50/15,788.56 = 6,406.80/x
  3. Step 3: Cross multiply
    11,442.50x = 15,788.56 × 6,406.80
  4. Step 4: Simplify right side
    11,442.50x = 101,154,146.21
  5. Step 5: Solve for x
    x = 101,154,146.21/11,442.50
  6. Step 6: Final answer
    x = 8,840.21

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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.