Home / 10,987.01-15,158.31-6,206.39

Finding the Fourth Proportional to 10,987.01, 15,158.31 and 6,206.39

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Solution

The fourth proportional to 10,987.01, 15,158.31 and 6,206.39 is: 8,562.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.01 : 15,158.31 = 6,206.39 : x
  2. Step 2: Convert to fraction form
    10,987.01/15,158.31 = 6,206.39/x
  3. Step 3: Cross multiply
    10,987.01x = 15,158.31 × 6,206.39
  4. Step 4: Simplify right side
    10,987.01x = 94,078,383.60
  5. Step 5: Solve for x
    x = 94,078,383.60/10,987.01
  6. Step 6: Final answer
    x = 8,562.69

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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.