Home / 39,108.58-53,970.09-21,203.86

Finding the Fourth Proportional to 39,108.58, 53,970.09 and 21,203.86

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Solution

The fourth proportional to 39,108.58, 53,970.09 and 21,203.86 is: 29,261.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,108.58 : 53,970.09 = 21,203.86 : x
  2. Step 2: Convert to fraction form
    39,108.58/53,970.09 = 21,203.86/x
  3. Step 3: Cross multiply
    39,108.58x = 53,970.09 × 21,203.86
  4. Step 4: Simplify right side
    39,108.58x = 1,144,373,962.70
  5. Step 5: Solve for x
    x = 1,144,373,962.70/39,108.58
  6. Step 6: Final answer
    x = 29,261.46

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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.