Home / 15,983.63-22,056.45-8,813.21

Finding the Fourth Proportional to 15,983.63, 22,056.45 and 8,813.21

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Solution

The fourth proportional to 15,983.63, 22,056.45 and 8,813.21 is: 12,161.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,983.63 : 22,056.45 = 8,813.21 : x
  2. Step 2: Convert to fraction form
    15,983.63/22,056.45 = 8,813.21/x
  3. Step 3: Cross multiply
    15,983.63x = 22,056.45 × 8,813.21
  4. Step 4: Simplify right side
    15,983.63x = 194,388,031.95
  5. Step 5: Solve for x
    x = 194,388,031.95/15,983.63
  6. Step 6: Final answer
    x = 12,161.70

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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.