Home / 20,963.79-31,442.01-6,923.64

Finding the Fourth Proportional to 20,963.79, 31,442.01 and 6,923.64

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Solution

The fourth proportional to 20,963.79, 31,442.01 and 6,923.64 is: 10,384.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.79 : 31,442.01 = 6,923.64 : x
  2. Step 2: Convert to fraction form
    20,963.79/31,442.01 = 6,923.64/x
  3. Step 3: Cross multiply
    20,963.79x = 31,442.01 × 6,923.64
  4. Step 4: Simplify right side
    20,963.79x = 217,693,158.12
  5. Step 5: Solve for x
    x = 217,693,158.12/20,963.79
  6. Step 6: Final answer
    x = 10,384.25

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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.