Home / 31,495.70-43,448.75-20,156.10

Finding the Fourth Proportional to 31,495.70, 43,448.75 and 20,156.10

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Solution

The fourth proportional to 31,495.70, 43,448.75 and 20,156.10 is: 27,805.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,495.70 : 43,448.75 = 20,156.10 : x
  2. Step 2: Convert to fraction form
    31,495.70/43,448.75 = 20,156.10/x
  3. Step 3: Cross multiply
    31,495.70x = 43,448.75 × 20,156.10
  4. Step 4: Simplify right side
    31,495.70x = 875,757,349.88
  5. Step 5: Solve for x
    x = 875,757,349.88/31,495.70
  6. Step 6: Final answer
    x = 27,805.62

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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.