Home / 39,177.95-54,065.40-21,272.81

Finding the Fourth Proportional to 39,177.95, 54,065.40 and 21,272.81

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Solution

The fourth proportional to 39,177.95, 54,065.40 and 21,272.81 is: 29,356.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,177.95 : 54,065.40 = 21,272.81 : x
  2. Step 2: Convert to fraction form
    39,177.95/54,065.40 = 21,272.81/x
  3. Step 3: Cross multiply
    39,177.95x = 54,065.40 × 21,272.81
  4. Step 4: Simplify right side
    39,177.95x = 1,150,122,981.77
  5. Step 5: Solve for x
    x = 1,150,122,981.77/39,177.95
  6. Step 6: Final answer
    x = 29,356.38

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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.