Home / 21,975.59-30,329.07-12,415.95

Finding the Fourth Proportional to 21,975.59, 30,329.07 and 12,415.95

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Solution

The fourth proportional to 21,975.59, 30,329.07 and 12,415.95 is: 17,135.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,975.59 : 30,329.07 = 12,415.95 : x
  2. Step 2: Convert to fraction form
    21,975.59/30,329.07 = 12,415.95/x
  3. Step 3: Cross multiply
    21,975.59x = 30,329.07 × 12,415.95
  4. Step 4: Simplify right side
    21,975.59x = 376,564,274.87
  5. Step 5: Solve for x
    x = 376,564,274.87/21,975.59
  6. Step 6: Final answer
    x = 17,135.57

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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.