Home / 39,220.94-54,125.30-21,315.94

Finding the Fourth Proportional to 39,220.94, 54,125.30 and 21,315.94

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Solution

The fourth proportional to 39,220.94, 54,125.30 and 21,315.94 is: 29,416.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,220.94 : 54,125.30 = 21,315.94 : x
  2. Step 2: Convert to fraction form
    39,220.94/54,125.30 = 21,315.94/x
  3. Step 3: Cross multiply
    39,220.94x = 54,125.30 × 21,315.94
  4. Step 4: Simplify right side
    39,220.94x = 1,153,731,647.28
  5. Step 5: Solve for x
    x = 1,153,731,647.28/39,220.94
  6. Step 6: Final answer
    x = 29,416.22

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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.