Home / 12,720.05-17,550.54-7,617.24

Finding the Fourth Proportional to 12,720.05, 17,550.54 and 7,617.24

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Solution

The fourth proportional to 12,720.05, 17,550.54 and 7,617.24 is: 10,509.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.05 : 17,550.54 = 7,617.24 : x
  2. Step 2: Convert to fraction form
    12,720.05/17,550.54 = 7,617.24/x
  3. Step 3: Cross multiply
    12,720.05x = 17,550.54 × 7,617.24
  4. Step 4: Simplify right side
    12,720.05x = 133,686,675.31
  5. Step 5: Solve for x
    x = 133,686,675.31/12,720.05
  6. Step 6: Final answer
    x = 10,509.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.