Home / 16,043.70-22,139.90-8,970.78

Finding the Fourth Proportional to 16,043.70, 22,139.90 and 8,970.78

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Solution

The fourth proportional to 16,043.70, 22,139.90 and 8,970.78 is: 12,379.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,043.70 : 22,139.90 = 8,970.78 : x
  2. Step 2: Convert to fraction form
    16,043.70/22,139.90 = 8,970.78/x
  3. Step 3: Cross multiply
    16,043.70x = 22,139.90 × 8,970.78
  4. Step 4: Simplify right side
    16,043.70x = 198,612,172.12
  5. Step 5: Solve for x
    x = 198,612,172.12/16,043.70
  6. Step 6: Final answer
    x = 12,379.45

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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.