Home / 22,979.85-31,711.01-12,908.72

Finding the Fourth Proportional to 22,979.85, 31,711.01 and 12,908.72

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Solution

The fourth proportional to 22,979.85, 31,711.01 and 12,908.72 is: 17,813.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,979.85 : 31,711.01 = 12,908.72 : x
  2. Step 2: Convert to fraction form
    22,979.85/31,711.01 = 12,908.72/x
  3. Step 3: Cross multiply
    22,979.85x = 31,711.01 × 12,908.72
  4. Step 4: Simplify right side
    22,979.85x = 409,348,325.91
  5. Step 5: Solve for x
    x = 409,348,325.91/22,979.85
  6. Step 6: Final answer
    x = 17,813.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.