Home / 11,111.04-15,326.28-6,631.68

Finding the Fourth Proportional to 11,111.04, 15,326.28 and 6,631.68

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Solution

The fourth proportional to 11,111.04, 15,326.28 and 6,631.68 is: 9,147.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,111.04 : 15,326.28 = 6,631.68 : x
  2. Step 2: Convert to fraction form
    11,111.04/15,326.28 = 6,631.68/x
  3. Step 3: Cross multiply
    11,111.04x = 15,326.28 × 6,631.68
  4. Step 4: Simplify right side
    11,111.04x = 101,638,984.55
  5. Step 5: Solve for x
    x = 101,638,984.55/11,111.04
  6. Step 6: Final answer
    x = 9,147.57

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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.