Home / 11,681.55-16,118.07-7,431.06

Finding the Fourth Proportional to 11,681.55, 16,118.07 and 7,431.06

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Solution

The fourth proportional to 11,681.55, 16,118.07 and 7,431.06 is: 10,253.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,681.55 : 16,118.07 = 7,431.06 : x
  2. Step 2: Convert to fraction form
    11,681.55/16,118.07 = 7,431.06/x
  3. Step 3: Cross multiply
    11,681.55x = 16,118.07 × 7,431.06
  4. Step 4: Simplify right side
    11,681.55x = 119,774,345.25
  5. Step 5: Solve for x
    x = 119,774,345.25/11,681.55
  6. Step 6: Final answer
    x = 10,253.29

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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.