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Finding the Fourth Proportional to 15,133.48, 20,877.68 and 8,669.68

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Solution

The fourth proportional to 15,133.48, 20,877.68 and 8,669.68 is: 11,960.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,133.48 : 20,877.68 = 8,669.68 : x
  2. Step 2: Convert to fraction form
    15,133.48/20,877.68 = 8,669.68/x
  3. Step 3: Cross multiply
    15,133.48x = 20,877.68 × 8,669.68
  4. Step 4: Simplify right side
    15,133.48x = 181,002,804.74
  5. Step 5: Solve for x
    x = 181,002,804.74/15,133.48
  6. Step 6: Final answer
    x = 11,960.42

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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.