Home / 15,856.56-21,881.34-9,143.37

Finding the Fourth Proportional to 15,856.56, 21,881.34 and 9,143.37

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Solution

The fourth proportional to 15,856.56, 21,881.34 and 9,143.37 is: 12,617.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,856.56 : 21,881.34 = 9,143.37 : x
  2. Step 2: Convert to fraction form
    15,856.56/21,881.34 = 9,143.37/x
  3. Step 3: Cross multiply
    15,856.56x = 21,881.34 × 9,143.37
  4. Step 4: Simplify right side
    15,856.56x = 200,069,187.72
  5. Step 5: Solve for x
    x = 200,069,187.72/15,856.56
  6. Step 6: Final answer
    x = 12,617.44

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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.