Home / 21,157.95-29,184.69-13,614.08

Finding the Fourth Proportional to 21,157.95, 29,184.69 and 13,614.08

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Solution

The fourth proportional to 21,157.95, 29,184.69 and 13,614.08 is: 18,778.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.95 : 29,184.69 = 13,614.08 : x
  2. Step 2: Convert to fraction form
    21,157.95/29,184.69 = 13,614.08/x
  3. Step 3: Cross multiply
    21,157.95x = 29,184.69 × 13,614.08
  4. Step 4: Simplify right side
    21,157.95x = 397,322,828.45
  5. Step 5: Solve for x
    x = 397,322,828.45/21,157.95
  6. Step 6: Final answer
    x = 18,778.89

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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.