Home / 28,146.87-42,220.81-9,423.41

Finding the Fourth Proportional to 28,146.87, 42,220.81 and 9,423.41

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Solution

The fourth proportional to 28,146.87, 42,220.81 and 9,423.41 is: 14,135.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,146.87 : 42,220.81 = 9,423.41 : x
  2. Step 2: Convert to fraction form
    28,146.87/42,220.81 = 9,423.41/x
  3. Step 3: Cross multiply
    28,146.87x = 42,220.81 × 9,423.41
  4. Step 4: Simplify right side
    28,146.87x = 397,863,956.05
  5. Step 5: Solve for x
    x = 397,863,956.05/28,146.87
  6. Step 6: Final answer
    x = 14,135.28

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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.