Home / 39,217.41-54,117.79-21,312.27

Finding the Fourth Proportional to 39,217.41, 54,117.79 and 21,312.27

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Solution

The fourth proportional to 39,217.41, 54,117.79 and 21,312.27 is: 29,409.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,217.41 : 54,117.79 = 21,312.27 : x
  2. Step 2: Convert to fraction form
    39,217.41/54,117.79 = 21,312.27/x
  3. Step 3: Cross multiply
    39,217.41x = 54,117.79 × 21,312.27
  4. Step 4: Simplify right side
    39,217.41x = 1,153,372,899.00
  5. Step 5: Solve for x
    x = 1,153,372,899.00/39,217.41
  6. Step 6: Final answer
    x = 29,409.72

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Similar ratio
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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.