Home / 21,631.70-29,851.73-12,200.87

Finding the Fourth Proportional to 21,631.70, 29,851.73 and 12,200.87

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Solution

The fourth proportional to 21,631.70, 29,851.73 and 12,200.87 is: 16,837.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,631.70 : 29,851.73 = 12,200.87 : x
  2. Step 2: Convert to fraction form
    21,631.70/29,851.73 = 12,200.87/x
  3. Step 3: Cross multiply
    21,631.70x = 29,851.73 × 12,200.87
  4. Step 4: Simplify right side
    21,631.70x = 364,216,866.74
  5. Step 5: Solve for x
    x = 364,216,866.74/21,631.70
  6. Step 6: Final answer
    x = 16,837.19

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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.