Home / 39,887.77-55,045.11-21,982.72

Finding the Fourth Proportional to 39,887.77, 55,045.11 and 21,982.72

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Solution

The fourth proportional to 39,887.77, 55,045.11 and 21,982.72 is: 30,336.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,887.77 : 55,045.11 = 21,982.72 : x
  2. Step 2: Convert to fraction form
    39,887.77/55,045.11 = 21,982.72/x
  3. Step 3: Cross multiply
    39,887.77x = 55,045.11 × 21,982.72
  4. Step 4: Simplify right side
    39,887.77x = 1,210,041,240.50
  5. Step 5: Solve for x
    x = 1,210,041,240.50/39,887.77
  6. Step 6: Final answer
    x = 30,336.15

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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.