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Finding the Fourth Proportional to 18,999.77, 28,507.85 and 10,232.93

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Solution

The fourth proportional to 18,999.77, 28,507.85 and 10,232.93 is: 15,353.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.77 : 28,507.85 = 10,232.93 : x
  2. Step 2: Convert to fraction form
    18,999.77/28,507.85 = 10,232.93/x
  3. Step 3: Cross multiply
    18,999.77x = 28,507.85 × 10,232.93
  4. Step 4: Simplify right side
    18,999.77x = 291,718,639.80
  5. Step 5: Solve for x
    x = 291,718,639.80/18,999.77
  6. Step 6: Final answer
    x = 15,353.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.