Home / 15,339.78-21,168.59-8,533.65

Finding the Fourth Proportional to 15,339.78, 21,168.59 and 8,533.65

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Solution

The fourth proportional to 15,339.78, 21,168.59 and 8,533.65 is: 11,776.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,339.78 : 21,168.59 = 8,533.65 : x
  2. Step 2: Convert to fraction form
    15,339.78/21,168.59 = 8,533.65/x
  3. Step 3: Cross multiply
    15,339.78x = 21,168.59 × 8,533.65
  4. Step 4: Simplify right side
    15,339.78x = 180,645,295.39
  5. Step 5: Solve for x
    x = 180,645,295.39/15,339.78
  6. Step 6: Final answer
    x = 11,776.26

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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.