Home / 39,980.34-55,175.02-22,075.28

Finding the Fourth Proportional to 39,980.34, 55,175.02 and 22,075.28

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Solution

The fourth proportional to 39,980.34, 55,175.02 and 22,075.28 is: 30,465.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,980.34 : 55,175.02 = 22,075.28 : x
  2. Step 2: Convert to fraction form
    39,980.34/55,175.02 = 22,075.28/x
  3. Step 3: Cross multiply
    39,980.34x = 55,175.02 × 22,075.28
  4. Step 4: Simplify right side
    39,980.34x = 1,218,004,015.51
  5. Step 5: Solve for x
    x = 1,218,004,015.51/39,980.34
  6. Step 6: Final answer
    x = 30,465.07

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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.