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Finding the Fourth Proportional to 13,585.78, 18,748.14 and 7,535.98

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Solution

The fourth proportional to 13,585.78, 18,748.14 and 7,535.98 is: 10,399.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.78 : 18,748.14 = 7,535.98 : x
  2. Step 2: Convert to fraction form
    13,585.78/18,748.14 = 7,535.98/x
  3. Step 3: Cross multiply
    13,585.78x = 18,748.14 × 7,535.98
  4. Step 4: Simplify right side
    13,585.78x = 141,285,608.08
  5. Step 5: Solve for x
    x = 141,285,608.08/13,585.78
  6. Step 6: Final answer
    x = 10,399.52

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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.