Home / 39,381.70-54,346.08-21,476.74

Finding the Fourth Proportional to 39,381.70, 54,346.08 and 21,476.74

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Solution

The fourth proportional to 39,381.70, 54,346.08 and 21,476.74 is: 29,637.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,381.70 : 54,346.08 = 21,476.74 : x
  2. Step 2: Convert to fraction form
    39,381.70/54,346.08 = 21,476.74/x
  3. Step 3: Cross multiply
    39,381.70x = 54,346.08 × 21,476.74
  4. Step 4: Simplify right side
    39,381.70x = 1,167,176,630.18
  5. Step 5: Solve for x
    x = 1,167,176,630.18/39,381.70
  6. Step 6: Final answer
    x = 29,637.54

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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.