Home / 22,280.84-30,743.52-12,720.68

Finding the Fourth Proportional to 22,280.84, 30,743.52 and 12,720.68

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Solution

The fourth proportional to 22,280.84, 30,743.52 and 12,720.68 is: 17,552.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,280.84 : 30,743.52 = 12,720.68 : x
  2. Step 2: Convert to fraction form
    22,280.84/30,743.52 = 12,720.68/x
  3. Step 3: Cross multiply
    22,280.84x = 30,743.52 × 12,720.68
  4. Step 4: Simplify right side
    22,280.84x = 391,078,479.99
  5. Step 5: Solve for x
    x = 391,078,479.99/22,280.84
  6. Step 6: Final answer
    x = 17,552.23

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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.