Home / 15,135.40-22,711.20-6,816.70

Finding the Fourth Proportional to 15,135.40, 22,711.20 and 6,816.70

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Solution

The fourth proportional to 15,135.40, 22,711.20 and 6,816.70 is: 10,228.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,135.40 : 22,711.20 = 6,816.70 : x
  2. Step 2: Convert to fraction form
    15,135.40/22,711.20 = 6,816.70/x
  3. Step 3: Cross multiply
    15,135.40x = 22,711.20 × 6,816.70
  4. Step 4: Simplify right side
    15,135.40x = 154,815,437.04
  5. Step 5: Solve for x
    x = 154,815,437.04/15,135.40
  6. Step 6: Final answer
    x = 10,228.70

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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.