Home / 18,823.68-28,235.04-4,972.80

Finding the Fourth Proportional to 18,823.68, 28,235.04 and 4,972.80

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Solution

The fourth proportional to 18,823.68, 28,235.04 and 4,972.80 is: 7,459.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,823.68 : 28,235.04 = 4,972.80 : x
  2. Step 2: Convert to fraction form
    18,823.68/28,235.04 = 4,972.80/x
  3. Step 3: Cross multiply
    18,823.68x = 28,235.04 × 4,972.80
  4. Step 4: Simplify right side
    18,823.68x = 140,407,206.91
  5. Step 5: Solve for x
    x = 140,407,206.91/18,823.68
  6. Step 6: Final answer
    x = 7,459.07

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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.