Home / 11,070.78-15,277.95-6,290.61

Finding the Fourth Proportional to 11,070.78, 15,277.95 and 6,290.61

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Solution

The fourth proportional to 11,070.78, 15,277.95 and 6,290.61 is: 8,681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,070.78 : 15,277.95 = 6,290.61 : x
  2. Step 2: Convert to fraction form
    11,070.78/15,277.95 = 6,290.61/x
  3. Step 3: Cross multiply
    11,070.78x = 15,277.95 × 6,290.61
  4. Step 4: Simplify right side
    11,070.78x = 96,107,625.05
  5. Step 5: Solve for x
    x = 96,107,625.05/11,070.78
  6. Step 6: Final answer
    x = 8,681.20

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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.