Home / 20,417.20-28,176-12,033.68

Finding the Fourth Proportional to 20,417.20, 28,176 and 12,033.68

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Solution

The fourth proportional to 20,417.20, 28,176 and 12,033.68 is: 16,606.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,417.20 : 28,176 = 12,033.68 : x
  2. Step 2: Convert to fraction form
    20,417.20/28,176 = 12,033.68/x
  3. Step 3: Cross multiply
    20,417.20x = 28,176 × 12,033.68
  4. Step 4: Simplify right side
    20,417.20x = 339,060,967.68
  5. Step 5: Solve for x
    x = 339,060,967.68/20,417.20
  6. Step 6: Final answer
    x = 16,606.63

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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.