Home / 31,911.72-44,031.51-18,478.14

Finding the Fourth Proportional to 31,911.72, 44,031.51 and 18,478.14

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Solution

The fourth proportional to 31,911.72, 44,031.51 and 18,478.14 is: 25,495.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,911.72 : 44,031.51 = 18,478.14 : x
  2. Step 2: Convert to fraction form
    31,911.72/44,031.51 = 18,478.14/x
  3. Step 3: Cross multiply
    31,911.72x = 44,031.51 × 18,478.14
  4. Step 4: Simplify right side
    31,911.72x = 813,620,406.19
  5. Step 5: Solve for x
    x = 813,620,406.19/31,911.72
  6. Step 6: Final answer
    x = 25,495.97

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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.