Home / 20,296.58-30,439.40-13,762.91

Finding the Fourth Proportional to 20,296.58, 30,439.40 and 13,762.91

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Solution

The fourth proportional to 20,296.58, 30,439.40 and 13,762.91 is: 20,640.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,296.58 : 30,439.40 = 13,762.91 : x
  2. Step 2: Convert to fraction form
    20,296.58/30,439.40 = 13,762.91/x
  3. Step 3: Cross multiply
    20,296.58x = 30,439.40 × 13,762.91
  4. Step 4: Simplify right side
    20,296.58x = 418,934,729.94
  5. Step 5: Solve for x
    x = 418,934,729.94/20,296.58
  6. Step 6: Final answer
    x = 20,640.66

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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.