Home / 43,136.57-64,658.48-20,900.86

Finding the Fourth Proportional to 43,136.57, 64,658.48 and 20,900.86

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Solution

The fourth proportional to 43,136.57, 64,658.48 and 20,900.86 is: 31,328.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,136.57 : 64,658.48 = 20,900.86 : x
  2. Step 2: Convert to fraction form
    43,136.57/64,658.48 = 20,900.86/x
  3. Step 3: Cross multiply
    43,136.57x = 64,658.48 × 20,900.86
  4. Step 4: Simplify right side
    43,136.57x = 1,351,417,838.29
  5. Step 5: Solve for x
    x = 1,351,417,838.29/43,136.57
  6. Step 6: Final answer
    x = 31,328.82

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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.