Home / 18,937.05-28,405.52-5,611.08

Finding the Fourth Proportional to 18,937.05, 28,405.52 and 5,611.08

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Solution

The fourth proportional to 18,937.05, 28,405.52 and 5,611.08 is: 8,416.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937.05 : 28,405.52 = 5,611.08 : x
  2. Step 2: Convert to fraction form
    18,937.05/28,405.52 = 5,611.08/x
  3. Step 3: Cross multiply
    18,937.05x = 28,405.52 × 5,611.08
  4. Step 4: Simplify right side
    18,937.05x = 159,385,645.16
  5. Step 5: Solve for x
    x = 159,385,645.16/18,937.05
  6. Step 6: Final answer
    x = 8,416.60

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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.