Home / 21,886.56-30,212.64-15,597.36

Finding the Fourth Proportional to 21,886.56, 30,212.64 and 15,597.36

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Solution

The fourth proportional to 21,886.56, 30,212.64 and 15,597.36 is: 21,530.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,886.56 : 30,212.64 = 15,597.36 : x
  2. Step 2: Convert to fraction form
    21,886.56/30,212.64 = 15,597.36/x
  3. Step 3: Cross multiply
    21,886.56x = 30,212.64 × 15,597.36
  4. Step 4: Simplify right side
    21,886.56x = 471,237,422.63
  5. Step 5: Solve for x
    x = 471,237,422.63/21,886.56
  6. Step 6: Final answer
    x = 21,530.90

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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.