Home / 11,172.07-15,417.45-6,456.34

Finding the Fourth Proportional to 11,172.07, 15,417.45 and 6,456.34

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Solution

The fourth proportional to 11,172.07, 15,417.45 and 6,456.34 is: 8,909.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.07 : 15,417.45 = 6,456.34 : x
  2. Step 2: Convert to fraction form
    11,172.07/15,417.45 = 6,456.34/x
  3. Step 3: Cross multiply
    11,172.07x = 15,417.45 × 6,456.34
  4. Step 4: Simplify right side
    11,172.07x = 99,540,299.13
  5. Step 5: Solve for x
    x = 99,540,299.13/11,172.07
  6. Step 6: Final answer
    x = 8,909.75

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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.