Home / 39,108.75-53,970.26-21,203.70

Finding the Fourth Proportional to 39,108.75, 53,970.26 and 21,203.70

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Solution

The fourth proportional to 39,108.75, 53,970.26 and 21,203.70 is: 29,261.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,108.75 : 53,970.26 = 21,203.70 : x
  2. Step 2: Convert to fraction form
    39,108.75/53,970.26 = 21,203.70/x
  3. Step 3: Cross multiply
    39,108.75x = 53,970.26 × 21,203.70
  4. Step 4: Simplify right side
    39,108.75x = 1,144,369,201.96
  5. Step 5: Solve for x
    x = 1,144,369,201.96/39,108.75
  6. Step 6: Final answer
    x = 29,261.21

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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.