Home / 31,895.20-47,821.20-16,904.80

Finding the Fourth Proportional to 31,895.20, 47,821.20 and 16,904.80

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Solution

The fourth proportional to 31,895.20, 47,821.20 and 16,904.80 is: 25,345.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,895.20 : 47,821.20 = 16,904.80 : x
  2. Step 2: Convert to fraction form
    31,895.20/47,821.20 = 16,904.80/x
  3. Step 3: Cross multiply
    31,895.20x = 47,821.20 × 16,904.80
  4. Step 4: Simplify right side
    31,895.20x = 808,407,821.76
  5. Step 5: Solve for x
    x = 808,407,821.76/31,895.20
  6. Step 6: Final answer
    x = 25,345.75

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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.