Home / 18,860.10-28,273.41-9,487.86

Finding the Fourth Proportional to 18,860.10, 28,273.41 and 9,487.86

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Solution

The fourth proportional to 18,860.10, 28,273.41 and 9,487.86 is: 14,223.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,860.10 : 28,273.41 = 9,487.86 : x
  2. Step 2: Convert to fraction form
    18,860.10/28,273.41 = 9,487.86/x
  3. Step 3: Cross multiply
    18,860.10x = 28,273.41 × 9,487.86
  4. Step 4: Simplify right side
    18,860.10x = 268,254,155.80
  5. Step 5: Solve for x
    x = 268,254,155.80/18,860.10
  6. Step 6: Final answer
    x = 14,223.37

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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.