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Finding the Fourth Proportional to 13,065.48, 18,030.60 and 7,476.48

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Solution

The fourth proportional to 13,065.48, 18,030.60 and 7,476.48 is: 10,317.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,065.48 : 18,030.60 = 7,476.48 : x
  2. Step 2: Convert to fraction form
    13,065.48/18,030.60 = 7,476.48/x
  3. Step 3: Cross multiply
    13,065.48x = 18,030.60 × 7,476.48
  4. Step 4: Simplify right side
    13,065.48x = 134,805,420.29
  5. Step 5: Solve for x
    x = 134,805,420.29/13,065.48
  6. Step 6: Final answer
    x = 10,317.68

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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.