Home / 13,041.30-19,544.79-7,120.81

Finding the Fourth Proportional to 13,041.30, 19,544.79 and 7,120.81

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Solution

The fourth proportional to 13,041.30, 19,544.79 and 7,120.81 is: 10,671.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,041.30 : 19,544.79 = 7,120.81 : x
  2. Step 2: Convert to fraction form
    13,041.30/19,544.79 = 7,120.81/x
  3. Step 3: Cross multiply
    13,041.30x = 19,544.79 × 7,120.81
  4. Step 4: Simplify right side
    13,041.30x = 139,174,787.21
  5. Step 5: Solve for x
    x = 139,174,787.21/13,041.30
  6. Step 6: Final answer
    x = 10,671.85

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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.