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Finding the Fourth Proportional to 13,260, 18,298.68 and 7,291.56

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Solution

The fourth proportional to 13,260, 18,298.68 and 7,291.56 is: 10,062.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,260 : 18,298.68 = 7,291.56 : x
  2. Step 2: Convert to fraction form
    13,260/18,298.68 = 7,291.56/x
  3. Step 3: Cross multiply
    13,260x = 18,298.68 × 7,291.56
  4. Step 4: Simplify right side
    13,260x = 133,425,923.14
  5. Step 5: Solve for x
    x = 133,425,923.14/13,260
  6. Step 6: Final answer
    x = 10,062.29

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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.