Home / 11,921.04-16,451.76-6,886.20

Finding the Fourth Proportional to 11,921.04, 16,451.76 and 6,886.20

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Solution

The fourth proportional to 11,921.04, 16,451.76 and 6,886.20 is: 9,503.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.04 : 16,451.76 = 6,886.20 : x
  2. Step 2: Convert to fraction form
    11,921.04/16,451.76 = 6,886.20/x
  3. Step 3: Cross multiply
    11,921.04x = 16,451.76 × 6,886.20
  4. Step 4: Simplify right side
    11,921.04x = 113,290,109.71
  5. Step 5: Solve for x
    x = 113,290,109.71/11,921.04
  6. Step 6: Final answer
    x = 9,503.37

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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.