Home / 31,931.04-47,895.84-13,216.80

Finding the Fourth Proportional to 31,931.04, 47,895.84 and 13,216.80

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Solution

The fourth proportional to 31,931.04, 47,895.84 and 13,216.80 is: 19,824.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,931.04 : 47,895.84 = 13,216.80 : x
  2. Step 2: Convert to fraction form
    31,931.04/47,895.84 = 13,216.80/x
  3. Step 3: Cross multiply
    31,931.04x = 47,895.84 × 13,216.80
  4. Step 4: Simplify right side
    31,931.04x = 633,029,738.11
  5. Step 5: Solve for x
    x = 633,029,738.11/31,931.04
  6. Step 6: Final answer
    x = 19,824.90

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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.