Home / 31,447.48-43,411.89-21,116.52

Finding the Fourth Proportional to 31,447.48, 43,411.89 and 21,116.52

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Solution

The fourth proportional to 31,447.48, 43,411.89 and 21,116.52 is: 29,150.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,447.48 : 43,411.89 = 21,116.52 : x
  2. Step 2: Convert to fraction form
    31,447.48/43,411.89 = 21,116.52/x
  3. Step 3: Cross multiply
    31,447.48x = 43,411.89 × 21,116.52
  4. Step 4: Simplify right side
    31,447.48x = 916,708,043.42
  5. Step 5: Solve for x
    x = 916,708,043.42/31,447.48
  6. Step 6: Final answer
    x = 29,150.45

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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.