Home / 14,780.48-20,399.72-8,812.52

Finding the Fourth Proportional to 14,780.48, 20,399.72 and 8,812.52

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Solution

The fourth proportional to 14,780.48, 20,399.72 and 8,812.52 is: 12,162.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.48 : 20,399.72 = 8,812.52 : x
  2. Step 2: Convert to fraction form
    14,780.48/20,399.72 = 8,812.52/x
  3. Step 3: Cross multiply
    14,780.48x = 20,399.72 × 8,812.52
  4. Step 4: Simplify right side
    14,780.48x = 179,772,940.49
  5. Step 5: Solve for x
    x = 179,772,940.49/14,780.48
  6. Step 6: Final answer
    x = 12,162.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.