Home / 15,756.14-21,743.52-8,682.40

Finding the Fourth Proportional to 15,756.14, 21,743.52 and 8,682.40

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Solution

The fourth proportional to 15,756.14, 21,743.52 and 8,682.40 is: 11,981.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,756.14 : 21,743.52 = 8,682.40 : x
  2. Step 2: Convert to fraction form
    15,756.14/21,743.52 = 8,682.40/x
  3. Step 3: Cross multiply
    15,756.14x = 21,743.52 × 8,682.40
  4. Step 4: Simplify right side
    15,756.14x = 188,785,938.05
  5. Step 5: Solve for x
    x = 188,785,938.05/15,756.14
  6. Step 6: Final answer
    x = 11,981.74

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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.