Home / 39,259.58-54,178.76-21,355.34

Finding the Fourth Proportional to 39,259.58, 54,178.76 and 21,355.34

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Solution

The fourth proportional to 39,259.58, 54,178.76 and 21,355.34 is: 29,470.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,259.58 : 54,178.76 = 21,355.34 : x
  2. Step 2: Convert to fraction form
    39,259.58/54,178.76 = 21,355.34/x
  3. Step 3: Cross multiply
    39,259.58x = 54,178.76 × 21,355.34
  4. Step 4: Simplify right side
    39,259.58x = 1,157,005,733.80
  5. Step 5: Solve for x
    x = 1,157,005,733.80/39,259.58
  6. Step 6: Final answer
    x = 29,470.66

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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.