Home / 11,215.32-15,477.66-6,502.20

Finding the Fourth Proportional to 11,215.32, 15,477.66 and 6,502.20

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Solution

The fourth proportional to 11,215.32, 15,477.66 and 6,502.20 is: 8,973.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.32 : 15,477.66 = 6,502.20 : x
  2. Step 2: Convert to fraction form
    11,215.32/15,477.66 = 6,502.20/x
  3. Step 3: Cross multiply
    11,215.32x = 15,477.66 × 6,502.20
  4. Step 4: Simplify right side
    11,215.32x = 100,638,840.85
  5. Step 5: Solve for x
    x = 100,638,840.85/11,215.32
  6. Step 6: Final answer
    x = 8,973.34

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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.