Home / 39,887.52-55,045.93-21,983.68

Finding the Fourth Proportional to 39,887.52, 55,045.93 and 21,983.68

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Solution

The fourth proportional to 39,887.52, 55,045.93 and 21,983.68 is: 30,338.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,887.52 : 55,045.93 = 21,983.68 : x
  2. Step 2: Convert to fraction form
    39,887.52/55,045.93 = 21,983.68/x
  3. Step 3: Cross multiply
    39,887.52x = 55,045.93 × 21,983.68
  4. Step 4: Simplify right side
    39,887.52x = 1,210,112,010.67
  5. Step 5: Solve for x
    x = 1,210,112,010.67/39,887.52
  6. Step 6: Final answer
    x = 30,338.11

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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.