Home / 20,937.84-31,411.38-11,591.49

Finding the Fourth Proportional to 20,937.84, 31,411.38 and 11,591.49

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Solution

The fourth proportional to 20,937.84, 31,411.38 and 11,591.49 is: 17,389.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.84 : 31,411.38 = 11,591.49 : x
  2. Step 2: Convert to fraction form
    20,937.84/31,411.38 = 11,591.49/x
  3. Step 3: Cross multiply
    20,937.84x = 31,411.38 × 11,591.49
  4. Step 4: Simplify right side
    20,937.84x = 364,104,697.16
  5. Step 5: Solve for x
    x = 364,104,697.16/20,937.84
  6. Step 6: Final answer
    x = 17,389.79

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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.