Home / 9,988.45-13,775.16-6,447.94

Finding the Fourth Proportional to 9,988.45, 13,775.16 and 6,447.94

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Solution

The fourth proportional to 9,988.45, 13,775.16 and 6,447.94 is: 8,892.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.45 : 13,775.16 = 6,447.94 : x
  2. Step 2: Convert to fraction form
    9,988.45/13,775.16 = 6,447.94/x
  3. Step 3: Cross multiply
    9,988.45x = 13,775.16 × 6,447.94
  4. Step 4: Simplify right side
    9,988.45x = 88,821,394.91
  5. Step 5: Solve for x
    x = 88,821,394.91/9,988.45
  6. Step 6: Final answer
    x = 8,892.41

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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.