Home / 31,421.68-47,137.76-14,571.56

Finding the Fourth Proportional to 31,421.68, 47,137.76 and 14,571.56

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Solution

The fourth proportional to 31,421.68, 47,137.76 and 14,571.56 is: 21,859.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,421.68 : 47,137.76 = 14,571.56 : x
  2. Step 2: Convert to fraction form
    31,421.68/47,137.76 = 14,571.56/x
  3. Step 3: Cross multiply
    31,421.68x = 47,137.76 × 14,571.56
  4. Step 4: Simplify right side
    31,421.68x = 686,870,698.11
  5. Step 5: Solve for x
    x = 686,870,698.11/31,421.68
  6. Step 6: Final answer
    x = 21,859.77

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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.