Home / 22,945.32-31,662.60-12,872.40

Finding the Fourth Proportional to 22,945.32, 31,662.60 and 12,872.40

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Solution

The fourth proportional to 22,945.32, 31,662.60 and 12,872.40 is: 17,762.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,945.32 : 31,662.60 = 12,872.40 : x
  2. Step 2: Convert to fraction form
    22,945.32/31,662.60 = 12,872.40/x
  3. Step 3: Cross multiply
    22,945.32x = 31,662.60 × 12,872.40
  4. Step 4: Simplify right side
    22,945.32x = 407,573,652.24
  5. Step 5: Solve for x
    x = 407,573,652.24/22,945.32
  6. Step 6: Final answer
    x = 17,762.82

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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.