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Finding the Fourth Proportional to 13,065.57, 18,030.48 and 7,476.57

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Solution

The fourth proportional to 13,065.57, 18,030.48 and 7,476.57 is: 10,317.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,065.57 : 18,030.48 = 7,476.57 : x
  2. Step 2: Convert to fraction form
    13,065.57/18,030.48 = 7,476.57/x
  3. Step 3: Cross multiply
    13,065.57x = 18,030.48 × 7,476.57
  4. Step 4: Simplify right side
    13,065.57x = 134,806,145.85
  5. Step 5: Solve for x
    x = 134,806,145.85/13,065.57
  6. Step 6: Final answer
    x = 10,317.66

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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.