Home / 31,730.41-43,752.55-21,664.14

Finding the Fourth Proportional to 31,730.41, 43,752.55 and 21,664.14

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Solution

The fourth proportional to 31,730.41, 43,752.55 and 21,664.14 is: 29,872.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,730.41 : 43,752.55 = 21,664.14 : x
  2. Step 2: Convert to fraction form
    31,730.41/43,752.55 = 21,664.14/x
  3. Step 3: Cross multiply
    31,730.41x = 43,752.55 × 21,664.14
  4. Step 4: Simplify right side
    31,730.41x = 947,861,368.56
  5. Step 5: Solve for x
    x = 947,861,368.56/31,730.41
  6. Step 6: Final answer
    x = 29,872.33

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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.