Home / 28,153.70-42,225.38-10,380.50

Finding the Fourth Proportional to 28,153.70, 42,225.38 and 10,380.50

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Solution

The fourth proportional to 28,153.70, 42,225.38 and 10,380.50 is: 15,568.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,153.70 : 42,225.38 = 10,380.50 : x
  2. Step 2: Convert to fraction form
    28,153.70/42,225.38 = 10,380.50/x
  3. Step 3: Cross multiply
    28,153.70x = 42,225.38 × 10,380.50
  4. Step 4: Simplify right side
    28,153.70x = 438,320,557.09
  5. Step 5: Solve for x
    x = 438,320,557.09/28,153.70
  6. Step 6: Final answer
    x = 15,568.84

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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.