Home / 39,898.79-55,060.30-21,749.54

Finding the Fourth Proportional to 39,898.79, 55,060.30 and 21,749.54

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Solution

The fourth proportional to 39,898.79, 55,060.30 and 21,749.54 is: 30,014.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,898.79 : 55,060.30 = 21,749.54 : x
  2. Step 2: Convert to fraction form
    39,898.79/55,060.30 = 21,749.54/x
  3. Step 3: Cross multiply
    39,898.79x = 55,060.30 × 21,749.54
  4. Step 4: Simplify right side
    39,898.79x = 1,197,536,280.54
  5. Step 5: Solve for x
    x = 1,197,536,280.54/39,898.79
  6. Step 6: Final answer
    x = 30,014.35

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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.