Home / 39,900.36-55,062.86-21,996.01

Finding the Fourth Proportional to 39,900.36, 55,062.86 and 21,996.01

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Solution

The fourth proportional to 39,900.36, 55,062.86 and 21,996.01 is: 30,354.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,900.36 : 55,062.86 = 21,996.01 : x
  2. Step 2: Convert to fraction form
    39,900.36/55,062.86 = 21,996.01/x
  3. Step 3: Cross multiply
    39,900.36x = 55,062.86 × 21,996.01
  4. Step 4: Simplify right side
    39,900.36x = 1,211,163,219.19
  5. Step 5: Solve for x
    x = 1,211,163,219.19/39,900.36
  6. Step 6: Final answer
    x = 30,354.69

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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.