Home / 31,215.84-43,077.78-17,068.56

Finding the Fourth Proportional to 31,215.84, 43,077.78 and 17,068.56

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Solution

The fourth proportional to 31,215.84, 43,077.78 and 17,068.56 is: 23,554.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,215.84 : 43,077.78 = 17,068.56 : x
  2. Step 2: Convert to fraction form
    31,215.84/43,077.78 = 17,068.56/x
  3. Step 3: Cross multiply
    31,215.84x = 43,077.78 × 17,068.56
  4. Step 4: Simplify right side
    31,215.84x = 735,275,672.60
  5. Step 5: Solve for x
    x = 735,275,672.60/31,215.84
  6. Step 6: Final answer
    x = 23,554.57

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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.