Home / 39,203.20-54,099.76-21,298.08

Finding the Fourth Proportional to 39,203.20, 54,099.76 and 21,298.08

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Solution

The fourth proportional to 39,203.20, 54,099.76 and 21,298.08 is: 29,390.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,203.20 : 54,099.76 = 21,298.08 : x
  2. Step 2: Convert to fraction form
    39,203.20/54,099.76 = 21,298.08/x
  3. Step 3: Cross multiply
    39,203.20x = 54,099.76 × 21,298.08
  4. Step 4: Simplify right side
    39,203.20x = 1,152,221,016.46
  5. Step 5: Solve for x
    x = 1,152,221,016.46/39,203.20
  6. Step 6: Final answer
    x = 29,390.99

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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.