Home / 13,939.12-20,913.81-6,545.98

Finding the Fourth Proportional to 13,939.12, 20,913.81 and 6,545.98

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Solution

The fourth proportional to 13,939.12, 20,913.81 and 6,545.98 is: 9,821.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.12 : 20,913.81 = 6,545.98 : x
  2. Step 2: Convert to fraction form
    13,939.12/20,913.81 = 6,545.98/x
  3. Step 3: Cross multiply
    13,939.12x = 20,913.81 × 6,545.98
  4. Step 4: Simplify right side
    13,939.12x = 136,901,381.98
  5. Step 5: Solve for x
    x = 136,901,381.98/13,939.12
  6. Step 6: Final answer
    x = 9,821.38

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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.