Home / 31,031.39-42,824.39-16,884.77

Finding the Fourth Proportional to 31,031.39, 42,824.39 and 16,884.77

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Solution

The fourth proportional to 31,031.39, 42,824.39 and 16,884.77 is: 23,301.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,031.39 : 42,824.39 = 16,884.77 : x
  2. Step 2: Convert to fraction form
    31,031.39/42,824.39 = 16,884.77/x
  3. Step 3: Cross multiply
    31,031.39x = 42,824.39 × 16,884.77
  4. Step 4: Simplify right side
    31,031.39x = 723,079,975.54
  5. Step 5: Solve for x
    x = 723,079,975.54/31,031.39
  6. Step 6: Final answer
    x = 23,301.57

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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.