Home / 12,560.72-18,839.28-4,239.64

Finding the Fourth Proportional to 12,560.72, 18,839.28 and 4,239.64

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Solution

The fourth proportional to 12,560.72, 18,839.28 and 4,239.64 is: 6,358.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,560.72 : 18,839.28 = 4,239.64 : x
  2. Step 2: Convert to fraction form
    12,560.72/18,839.28 = 4,239.64/x
  3. Step 3: Cross multiply
    12,560.72x = 18,839.28 × 4,239.64
  4. Step 4: Simplify right side
    12,560.72x = 79,871,804.51
  5. Step 5: Solve for x
    x = 79,871,804.51/12,560.72
  6. Step 6: Final answer
    x = 6,358.86

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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.