Home / 15,585.03-21,507.35-8,511.48

Finding the Fourth Proportional to 15,585.03, 21,507.35 and 8,511.48

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Solution

The fourth proportional to 15,585.03, 21,507.35 and 8,511.48 is: 11,745.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,585.03 : 21,507.35 = 8,511.48 : x
  2. Step 2: Convert to fraction form
    15,585.03/21,507.35 = 8,511.48/x
  3. Step 3: Cross multiply
    15,585.03x = 21,507.35 × 8,511.48
  4. Step 4: Simplify right side
    15,585.03x = 183,059,336.82
  5. Step 5: Solve for x
    x = 183,059,336.82/15,585.03
  6. Step 6: Final answer
    x = 11,745.84

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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.