Home / 22,901.72-31,597.20-12,828.80

Finding the Fourth Proportional to 22,901.72, 31,597.20 and 12,828.80

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Solution

The fourth proportional to 22,901.72, 31,597.20 and 12,828.80 is: 17,699.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,901.72 : 31,597.20 = 12,828.80 : x
  2. Step 2: Convert to fraction form
    22,901.72/31,597.20 = 12,828.80/x
  3. Step 3: Cross multiply
    22,901.72x = 31,597.20 × 12,828.80
  4. Step 4: Simplify right side
    22,901.72x = 405,354,159.36
  5. Step 5: Solve for x
    x = 405,354,159.36/22,901.72
  6. Step 6: Final answer
    x = 17,699.73

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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.