Home / 15,585.03-21,507.33-8,511.45

Finding the Fourth Proportional to 15,585.03, 21,507.33 and 8,511.45

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Solution

The fourth proportional to 15,585.03, 21,507.33 and 8,511.45 is: 11,745.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,585.03 : 21,507.33 = 8,511.45 : x
  2. Step 2: Convert to fraction form
    15,585.03/21,507.33 = 8,511.45/x
  3. Step 3: Cross multiply
    15,585.03x = 21,507.33 × 8,511.45
  4. Step 4: Simplify right side
    15,585.03x = 183,058,563.93
  5. Step 5: Solve for x
    x = 183,058,563.93/15,585.03
  6. Step 6: Final answer
    x = 11,745.79

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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.