Home / 21,419.37-29,572.13-13,765.75

Finding the Fourth Proportional to 21,419.37, 29,572.13 and 13,765.75

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Solution

The fourth proportional to 21,419.37, 29,572.13 and 13,765.75 is: 19,005.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,419.37 : 29,572.13 = 13,765.75 : x
  2. Step 2: Convert to fraction form
    21,419.37/29,572.13 = 13,765.75/x
  3. Step 3: Cross multiply
    21,419.37x = 29,572.13 × 13,765.75
  4. Step 4: Simplify right side
    21,419.37x = 407,082,548.55
  5. Step 5: Solve for x
    x = 407,082,548.55/21,419.37
  6. Step 6: Final answer
    x = 19,005.35

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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.