Home / 39,899.36-55,061.48-21,995.01

Finding the Fourth Proportional to 39,899.36, 55,061.48 and 21,995.01

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Solution

The fourth proportional to 39,899.36, 55,061.48 and 21,995.01 is: 30,353.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,899.36 : 55,061.48 = 21,995.01 : x
  2. Step 2: Convert to fraction form
    39,899.36/55,061.48 = 21,995.01/x
  3. Step 3: Cross multiply
    39,899.36x = 55,061.48 × 21,995.01
  4. Step 4: Simplify right side
    39,899.36x = 1,211,077,858.20
  5. Step 5: Solve for x
    x = 1,211,077,858.20/39,899.36
  6. Step 6: Final answer
    x = 30,353.31

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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.