Home / 21,204.30-31,806.45-10,814.70

Finding the Fourth Proportional to 21,204.30, 31,806.45 and 10,814.70

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Solution

The fourth proportional to 21,204.30, 31,806.45 and 10,814.70 is: 16,222.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.30 : 31,806.45 = 10,814.70 : x
  2. Step 2: Convert to fraction form
    21,204.30/31,806.45 = 10,814.70/x
  3. Step 3: Cross multiply
    21,204.30x = 31,806.45 × 10,814.70
  4. Step 4: Simplify right side
    21,204.30x = 343,977,214.82
  5. Step 5: Solve for x
    x = 343,977,214.82/21,204.30
  6. Step 6: Final answer
    x = 16,222.05

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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.