Home / 20,887.94-31,292.67-10,345.70

Finding the Fourth Proportional to 20,887.94, 31,292.67 and 10,345.70

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Solution

The fourth proportional to 20,887.94, 31,292.67 and 10,345.70 is: 15,499.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.94 : 31,292.67 = 10,345.70 : x
  2. Step 2: Convert to fraction form
    20,887.94/31,292.67 = 10,345.70/x
  3. Step 3: Cross multiply
    20,887.94x = 31,292.67 × 10,345.70
  4. Step 4: Simplify right side
    20,887.94x = 323,744,576.02
  5. Step 5: Solve for x
    x = 323,744,576.02/20,887.94
  6. Step 6: Final answer
    x = 15,499.11

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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.