Home / 22,511.05-31,065.32-12,302.21

Finding the Fourth Proportional to 22,511.05, 31,065.32 and 12,302.21

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Solution

The fourth proportional to 22,511.05, 31,065.32 and 12,302.21 is: 16,977.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,511.05 : 31,065.32 = 12,302.21 : x
  2. Step 2: Convert to fraction form
    22,511.05/31,065.32 = 12,302.21/x
  3. Step 3: Cross multiply
    22,511.05x = 31,065.32 × 12,302.21
  4. Step 4: Simplify right side
    22,511.05x = 382,171,873.52
  5. Step 5: Solve for x
    x = 382,171,873.52/22,511.05
  6. Step 6: Final answer
    x = 16,977.08

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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.