Home / 12,507.80-18,761.75-10,156.68

Finding the Fourth Proportional to 12,507.80, 18,761.75 and 10,156.68

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Solution

The fourth proportional to 12,507.80, 18,761.75 and 10,156.68 is: 15,235.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,507.80 : 18,761.75 = 10,156.68 : x
  2. Step 2: Convert to fraction form
    12,507.80/18,761.75 = 10,156.68/x
  3. Step 3: Cross multiply
    12,507.80x = 18,761.75 × 10,156.68
  4. Step 4: Simplify right side
    12,507.80x = 190,557,040.21
  5. Step 5: Solve for x
    x = 190,557,040.21/12,507.80
  6. Step 6: Final answer
    x = 15,235.06

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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.