Home / 15,447.44-21,301.47-13,216.70

Finding the Fourth Proportional to 15,447.44, 21,301.47 and 13,216.70

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Solution

The fourth proportional to 15,447.44, 21,301.47 and 13,216.70 is: 18,225.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.44 : 21,301.47 = 13,216.70 : x
  2. Step 2: Convert to fraction form
    15,447.44/21,301.47 = 13,216.70/x
  3. Step 3: Cross multiply
    15,447.44x = 21,301.47 × 13,216.70
  4. Step 4: Simplify right side
    15,447.44x = 281,535,138.55
  5. Step 5: Solve for x
    x = 281,535,138.55/15,447.44
  6. Step 6: Final answer
    x = 18,225.36

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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.