Home / 21,007.70-31,511.55-9,322.10

Finding the Fourth Proportional to 21,007.70, 31,511.55 and 9,322.10

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Solution

The fourth proportional to 21,007.70, 31,511.55 and 9,322.10 is: 13,983.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,007.70 : 31,511.55 = 9,322.10 : x
  2. Step 2: Convert to fraction form
    21,007.70/31,511.55 = 9,322.10/x
  3. Step 3: Cross multiply
    21,007.70x = 31,511.55 × 9,322.10
  4. Step 4: Simplify right side
    21,007.70x = 293,753,820.26
  5. Step 5: Solve for x
    x = 293,753,820.26/21,007.70
  6. Step 6: Final answer
    x = 13,983.15

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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.