Home / 13,288.32-19,938.24-7,125.12

Finding the Fourth Proportional to 13,288.32, 19,938.24 and 7,125.12

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Solution

The fourth proportional to 13,288.32, 19,938.24 and 7,125.12 is: 10,690.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.32 : 19,938.24 = 7,125.12 : x
  2. Step 2: Convert to fraction form
    13,288.32/19,938.24 = 7,125.12/x
  3. Step 3: Cross multiply
    13,288.32x = 19,938.24 × 7,125.12
  4. Step 4: Simplify right side
    13,288.32x = 142,062,352.59
  5. Step 5: Solve for x
    x = 142,062,352.59/13,288.32
  6. Step 6: Final answer
    x = 10,690.77

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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.