Home / 20,655.36-30,983.04-5,072.98

Finding the Fourth Proportional to 20,655.36, 30,983.04 and 5,072.98

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Solution

The fourth proportional to 20,655.36, 30,983.04 and 5,072.98 is: 7,609.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.36 : 30,983.04 = 5,072.98 : x
  2. Step 2: Convert to fraction form
    20,655.36/30,983.04 = 5,072.98/x
  3. Step 3: Cross multiply
    20,655.36x = 30,983.04 × 5,072.98
  4. Step 4: Simplify right side
    20,655.36x = 157,176,342.26
  5. Step 5: Solve for x
    x = 157,176,342.26/20,655.36
  6. Step 6: Final answer
    x = 7,609.47

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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.