Home / 21,174.68-29,218.95-12,225.06

Finding the Fourth Proportional to 21,174.68, 29,218.95 and 12,225.06

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Solution

The fourth proportional to 21,174.68, 29,218.95 and 12,225.06 is: 16,869.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.68 : 29,218.95 = 12,225.06 : x
  2. Step 2: Convert to fraction form
    21,174.68/29,218.95 = 12,225.06/x
  3. Step 3: Cross multiply
    21,174.68x = 29,218.95 × 12,225.06
  4. Step 4: Simplify right side
    21,174.68x = 357,203,416.89
  5. Step 5: Solve for x
    x = 357,203,416.89/21,174.68
  6. Step 6: Final answer
    x = 16,869.37

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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.