Home / 14,155.83-21,238.20-8,539.70

Finding the Fourth Proportional to 14,155.83, 21,238.20 and 8,539.70

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Solution

The fourth proportional to 14,155.83, 21,238.20 and 8,539.70 is: 12,812.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,155.83 : 21,238.20 = 8,539.70 : x
  2. Step 2: Convert to fraction form
    14,155.83/21,238.20 = 8,539.70/x
  3. Step 3: Cross multiply
    14,155.83x = 21,238.20 × 8,539.70
  4. Step 4: Simplify right side
    14,155.83x = 181,367,750.35
  5. Step 5: Solve for x
    x = 181,367,750.35/14,155.83
  6. Step 6: Final answer
    x = 12,812.23

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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.