Home / 11,421.75-17,135.15-4,853.55

Finding the Fourth Proportional to 11,421.75, 17,135.15 and 4,853.55

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Solution

The fourth proportional to 11,421.75, 17,135.15 and 4,853.55 is: 7,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.75 : 17,135.15 = 4,853.55 : x
  2. Step 2: Convert to fraction form
    11,421.75/17,135.15 = 4,853.55/x
  3. Step 3: Cross multiply
    11,421.75x = 17,135.15 × 4,853.55
  4. Step 4: Simplify right side
    11,421.75x = 83,166,283.01
  5. Step 5: Solve for x
    x = 83,166,283.01/11,421.75
  6. Step 6: Final answer
    x = 7,281.40

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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.