Home / 10,012.38-15,018.57-3,438.51

Finding the Fourth Proportional to 10,012.38, 15,018.57 and 3,438.51

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Solution

The fourth proportional to 10,012.38, 15,018.57 and 3,438.51 is: 5,157.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,012.38 : 15,018.57 = 3,438.51 : x
  2. Step 2: Convert to fraction form
    10,012.38/15,018.57 = 3,438.51/x
  3. Step 3: Cross multiply
    10,012.38x = 15,018.57 × 3,438.51
  4. Step 4: Simplify right side
    10,012.38x = 51,641,503.13
  5. Step 5: Solve for x
    x = 51,641,503.13/10,012.38
  6. Step 6: Final answer
    x = 5,157.77

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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.