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Finding the Fourth Proportional to 13,035.11, 17,988 and 7,726.77

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Solution

The fourth proportional to 13,035.11, 17,988 and 7,726.77 is: 10,662.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,035.11 : 17,988 = 7,726.77 : x
  2. Step 2: Convert to fraction form
    13,035.11/17,988 = 7,726.77/x
  3. Step 3: Cross multiply
    13,035.11x = 17,988 × 7,726.77
  4. Step 4: Simplify right side
    13,035.11x = 138,989,138.76
  5. Step 5: Solve for x
    x = 138,989,138.76/13,035.11
  6. Step 6: Final answer
    x = 10,662.67

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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.