Home / 31,838.72-43,937.04-18,409.60

Finding the Fourth Proportional to 31,838.72, 43,937.04 and 18,409.60

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Solution

The fourth proportional to 31,838.72, 43,937.04 and 18,409.60 is: 25,405.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,838.72 : 43,937.04 = 18,409.60 : x
  2. Step 2: Convert to fraction form
    31,838.72/43,937.04 = 18,409.60/x
  3. Step 3: Cross multiply
    31,838.72x = 43,937.04 × 18,409.60
  4. Step 4: Simplify right side
    31,838.72x = 808,863,331.58
  5. Step 5: Solve for x
    x = 808,863,331.58/31,838.72
  6. Step 6: Final answer
    x = 25,405.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.