Home / 39,981.06-55,174.32-22,075.74

Finding the Fourth Proportional to 39,981.06, 55,174.32 and 22,075.74

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Solution

The fourth proportional to 39,981.06, 55,174.32 and 22,075.74 is: 30,464.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,981.06 : 55,174.32 = 22,075.74 : x
  2. Step 2: Convert to fraction form
    39,981.06/55,174.32 = 22,075.74/x
  3. Step 3: Cross multiply
    39,981.06x = 55,174.32 × 22,075.74
  4. Step 4: Simplify right side
    39,981.06x = 1,218,013,943.00
  5. Step 5: Solve for x
    x = 1,218,013,943.00/39,981.06
  6. Step 6: Final answer
    x = 30,464.77

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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.