Home / 11,225.40-16,830.90-4,654.20

Finding the Fourth Proportional to 11,225.40, 16,830.90 and 4,654.20

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Solution

The fourth proportional to 11,225.40, 16,830.90 and 4,654.20 is: 6,978.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,225.40 : 16,830.90 = 4,654.20 : x
  2. Step 2: Convert to fraction form
    11,225.40/16,830.90 = 4,654.20/x
  3. Step 3: Cross multiply
    11,225.40x = 16,830.90 × 4,654.20
  4. Step 4: Simplify right side
    11,225.40x = 78,334,374.78
  5. Step 5: Solve for x
    x = 78,334,374.78/11,225.40
  6. Step 6: Final answer
    x = 6,978.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.