Home / 39,860.51-55,007.01-21,955.10

Finding the Fourth Proportional to 39,860.51, 55,007.01 and 21,955.10

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Solution

The fourth proportional to 39,860.51, 55,007.01 and 21,955.10 is: 30,297.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,860.51 : 55,007.01 = 21,955.10 : x
  2. Step 2: Convert to fraction form
    39,860.51/55,007.01 = 21,955.10/x
  3. Step 3: Cross multiply
    39,860.51x = 55,007.01 × 21,955.10
  4. Step 4: Simplify right side
    39,860.51x = 1,207,684,130.22
  5. Step 5: Solve for x
    x = 1,207,684,130.22/39,860.51
  6. Step 6: Final answer
    x = 30,297.76

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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.