Home / 9,111.06-13,670.91-5,420.58

Finding the Fourth Proportional to 9,111.06, 13,670.91 and 5,420.58

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Solution

The fourth proportional to 9,111.06, 13,670.91 and 5,420.58 is: 8,133.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,111.06 : 13,670.91 = 5,420.58 : x
  2. Step 2: Convert to fraction form
    9,111.06/13,670.91 = 5,420.58/x
  3. Step 3: Cross multiply
    9,111.06x = 13,670.91 × 5,420.58
  4. Step 4: Simplify right side
    9,111.06x = 74,104,261.33
  5. Step 5: Solve for x
    x = 74,104,261.33/9,111.06
  6. Step 6: Final answer
    x = 8,133.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.