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Finding the Fourth Proportional to 13,101.51, 18,081.93 and 7,437.66

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Solution

The fourth proportional to 13,101.51, 18,081.93 and 7,437.66 is: 10,265.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101.51 : 18,081.93 = 7,437.66 : x
  2. Step 2: Convert to fraction form
    13,101.51/18,081.93 = 7,437.66/x
  3. Step 3: Cross multiply
    13,101.51x = 18,081.93 × 7,437.66
  4. Step 4: Simplify right side
    13,101.51x = 134,487,247.48
  5. Step 5: Solve for x
    x = 134,487,247.48/13,101.51
  6. Step 6: Final answer
    x = 10,265.02

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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.