Home / 11,215.08-15,460.65-7,847.46

Finding the Fourth Proportional to 11,215.08, 15,460.65 and 7,847.46

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Solution

The fourth proportional to 11,215.08, 15,460.65 and 7,847.46 is: 10,818.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.08 : 15,460.65 = 7,847.46 : x
  2. Step 2: Convert to fraction form
    11,215.08/15,460.65 = 7,847.46/x
  3. Step 3: Cross multiply
    11,215.08x = 15,460.65 × 7,847.46
  4. Step 4: Simplify right side
    11,215.08x = 121,326,832.45
  5. Step 5: Solve for x
    x = 121,326,832.45/11,215.08
  6. Step 6: Final answer
    x = 10,818.19

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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.