Home / 11,197.95-15,455.39-6,421.11

Finding the Fourth Proportional to 11,197.95, 15,455.39 and 6,421.11

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Solution

The fourth proportional to 11,197.95, 15,455.39 and 6,421.11 is: 8,862.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,197.95 : 15,455.39 = 6,421.11 : x
  2. Step 2: Convert to fraction form
    11,197.95/15,455.39 = 6,421.11/x
  3. Step 3: Cross multiply
    11,197.95x = 15,455.39 × 6,421.11
  4. Step 4: Simplify right side
    11,197.95x = 99,240,759.28
  5. Step 5: Solve for x
    x = 99,240,759.28/11,197.95
  6. Step 6: Final answer
    x = 8,862.40

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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.