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Finding the Fourth Proportional to 11,417.90, 17,126.61 and 5,261.90

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Solution

The fourth proportional to 11,417.90, 17,126.61 and 5,261.90 is: 7,892.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,417.90 : 17,126.61 = 5,261.90 : x
  2. Step 2: Convert to fraction form
    11,417.90/17,126.61 = 5,261.90/x
  3. Step 3: Cross multiply
    11,417.90x = 17,126.61 × 5,261.90
  4. Step 4: Simplify right side
    11,417.90x = 90,118,509.16
  5. Step 5: Solve for x
    x = 90,118,509.16/11,417.90
  6. Step 6: Final answer
    x = 7,892.74

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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.