Home / 13,135.16-18,126.79-7,167.08

Finding the Fourth Proportional to 13,135.16, 18,126.79 and 7,167.08

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Solution

The fourth proportional to 13,135.16, 18,126.79 and 7,167.08 is: 9,890.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.16 : 18,126.79 = 7,167.08 : x
  2. Step 2: Convert to fraction form
    13,135.16/18,126.79 = 7,167.08/x
  3. Step 3: Cross multiply
    13,135.16x = 18,126.79 × 7,167.08
  4. Step 4: Simplify right side
    13,135.16x = 129,916,181.47
  5. Step 5: Solve for x
    x = 129,916,181.47/13,135.16
  6. Step 6: Final answer
    x = 9,890.72

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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.