Home / 20,981.63-31,467.60-5,988.46

Finding the Fourth Proportional to 20,981.63, 31,467.60 and 5,988.46

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Solution

The fourth proportional to 20,981.63, 31,467.60 and 5,988.46 is: 8,981.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981.63 : 31,467.60 = 5,988.46 : x
  2. Step 2: Convert to fraction form
    20,981.63/31,467.60 = 5,988.46/x
  3. Step 3: Cross multiply
    20,981.63x = 31,467.60 × 5,988.46
  4. Step 4: Simplify right side
    20,981.63x = 188,442,385.23
  5. Step 5: Solve for x
    x = 188,442,385.23/20,981.63
  6. Step 6: Final answer
    x = 8,981.31

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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.