Home / 28,012.64-42,019.43-10,472.90

Finding the Fourth Proportional to 28,012.64, 42,019.43 and 10,472.90

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Solution

The fourth proportional to 28,012.64, 42,019.43 and 10,472.90 is: 15,709.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012.64 : 42,019.43 = 10,472.90 : x
  2. Step 2: Convert to fraction form
    28,012.64/42,019.43 = 10,472.90/x
  3. Step 3: Cross multiply
    28,012.64x = 42,019.43 × 10,472.90
  4. Step 4: Simplify right side
    28,012.64x = 440,065,025.99
  5. Step 5: Solve for x
    x = 440,065,025.99/28,012.64
  6. Step 6: Final answer
    x = 15,709.52

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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.