Home / 20,837.17-31,267.91-12,533.05

Finding the Fourth Proportional to 20,837.17, 31,267.91 and 12,533.05

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Solution

The fourth proportional to 20,837.17, 31,267.91 and 12,533.05 is: 18,806.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.17 : 31,267.91 = 12,533.05 : x
  2. Step 2: Convert to fraction form
    20,837.17/31,267.91 = 12,533.05/x
  3. Step 3: Cross multiply
    20,837.17x = 31,267.91 × 12,533.05
  4. Step 4: Simplify right side
    20,837.17x = 391,882,279.43
  5. Step 5: Solve for x
    x = 391,882,279.43/20,837.17
  6. Step 6: Final answer
    x = 18,806.89

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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.