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Finding the Fourth Proportional to 18,888.66, 28,333.08 and 5,740.92

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Solution

The fourth proportional to 18,888.66, 28,333.08 and 5,740.92 is: 8,611.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.66 : 28,333.08 = 5,740.92 : x
  2. Step 2: Convert to fraction form
    18,888.66/28,333.08 = 5,740.92/x
  3. Step 3: Cross multiply
    18,888.66x = 28,333.08 × 5,740.92
  4. Step 4: Simplify right side
    18,888.66x = 162,657,945.63
  5. Step 5: Solve for x
    x = 162,657,945.63/18,888.66
  6. Step 6: Final answer
    x = 8,611.41

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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.