Home / 21,213.54-29,289.33-13,259.34

Finding the Fourth Proportional to 21,213.54, 29,289.33 and 13,259.34

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Solution

The fourth proportional to 21,213.54, 29,289.33 and 13,259.34 is: 18,307.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.54 : 29,289.33 = 13,259.34 : x
  2. Step 2: Convert to fraction form
    21,213.54/29,289.33 = 13,259.34/x
  3. Step 3: Cross multiply
    21,213.54x = 29,289.33 × 13,259.34
  4. Step 4: Simplify right side
    21,213.54x = 388,357,184.84
  5. Step 5: Solve for x
    x = 388,357,184.84/21,213.54
  6. Step 6: Final answer
    x = 18,307.04

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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.