Home / 20,941.32-31,411.98-7,797

Finding the Fourth Proportional to 20,941.32, 31,411.98 and 7,797

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Solution

The fourth proportional to 20,941.32, 31,411.98 and 7,797 is: 11,695.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.32 : 31,411.98 = 7,797 : x
  2. Step 2: Convert to fraction form
    20,941.32/31,411.98 = 7,797/x
  3. Step 3: Cross multiply
    20,941.32x = 31,411.98 × 7,797
  4. Step 4: Simplify right side
    20,941.32x = 244,919,208.06
  5. Step 5: Solve for x
    x = 244,919,208.06/20,941.32
  6. Step 6: Final answer
    x = 11,695.50

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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.