Home / 31,136.74-42,956.36-19,179.34

Finding the Fourth Proportional to 31,136.74, 42,956.36 and 19,179.34

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Solution

The fourth proportional to 31,136.74, 42,956.36 and 19,179.34 is: 26,459.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,136.74 : 42,956.36 = 19,179.34 : x
  2. Step 2: Convert to fraction form
    31,136.74/42,956.36 = 19,179.34/x
  3. Step 3: Cross multiply
    31,136.74x = 42,956.36 × 19,179.34
  4. Step 4: Simplify right side
    31,136.74x = 823,874,537.71
  5. Step 5: Solve for x
    x = 823,874,537.71/31,136.74
  6. Step 6: Final answer
    x = 26,459.88

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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.