Home / 21,292.74-29,381.40-12,339.81

Finding the Fourth Proportional to 21,292.74, 29,381.40 and 12,339.81

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Solution

The fourth proportional to 21,292.74, 29,381.40 and 12,339.81 is: 17,027.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.74 : 29,381.40 = 12,339.81 : x
  2. Step 2: Convert to fraction form
    21,292.74/29,381.40 = 12,339.81/x
  3. Step 3: Cross multiply
    21,292.74x = 29,381.40 × 12,339.81
  4. Step 4: Simplify right side
    21,292.74x = 362,560,893.53
  5. Step 5: Solve for x
    x = 362,560,893.53/21,292.74
  6. Step 6: Final answer
    x = 17,027.44

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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.