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Finding the Fourth Proportional to 13,632.51, 18,813.08 and 7,500.47

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Solution

The fourth proportional to 13,632.51, 18,813.08 and 7,500.47 is: 10,350.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,632.51 : 18,813.08 = 7,500.47 : x
  2. Step 2: Convert to fraction form
    13,632.51/18,813.08 = 7,500.47/x
  3. Step 3: Cross multiply
    13,632.51x = 18,813.08 × 7,500.47
  4. Step 4: Simplify right side
    13,632.51x = 141,106,857.61
  5. Step 5: Solve for x
    x = 141,106,857.61/13,632.51
  6. Step 6: Final answer
    x = 10,350.77

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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.