Home / 31,598.40-43,612.64-21,550.80

Finding the Fourth Proportional to 31,598.40, 43,612.64 and 21,550.80

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Solution

The fourth proportional to 31,598.40, 43,612.64 and 21,550.80 is: 29,744.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,598.40 : 43,612.64 = 21,550.80 : x
  2. Step 2: Convert to fraction form
    31,598.40/43,612.64 = 21,550.80/x
  3. Step 3: Cross multiply
    31,598.40x = 43,612.64 × 21,550.80
  4. Step 4: Simplify right side
    31,598.40x = 939,887,282.11
  5. Step 5: Solve for x
    x = 939,887,282.11/31,598.40
  6. Step 6: Final answer
    x = 29,744.77

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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.