Home / 20,298.50-28,011.94-12,339.24

Finding the Fourth Proportional to 20,298.50, 28,011.94 and 12,339.24

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Solution

The fourth proportional to 20,298.50, 28,011.94 and 12,339.24 is: 17,028.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.50 : 28,011.94 = 12,339.24 : x
  2. Step 2: Convert to fraction form
    20,298.50/28,011.94 = 12,339.24/x
  3. Step 3: Cross multiply
    20,298.50x = 28,011.94 × 12,339.24
  4. Step 4: Simplify right side
    20,298.50x = 345,646,050.53
  5. Step 5: Solve for x
    x = 345,646,050.53/20,298.50
  6. Step 6: Final answer
    x = 17,028.16

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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.