Home / 15,856.69-21,832.44-13,461.70

Finding the Fourth Proportional to 15,856.69, 21,832.44 and 13,461.70

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Solution

The fourth proportional to 15,856.69, 21,832.44 and 13,461.70 is: 18,534.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,856.69 : 21,832.44 = 13,461.70 : x
  2. Step 2: Convert to fraction form
    15,856.69/21,832.44 = 13,461.70/x
  3. Step 3: Cross multiply
    15,856.69x = 21,832.44 × 13,461.70
  4. Step 4: Simplify right side
    15,856.69x = 293,901,757.55
  5. Step 5: Solve for x
    x = 293,901,757.55/15,856.69
  6. Step 6: Final answer
    x = 18,534.87

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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.