Home / 21,318.36-29,411.60-12,360.92

Finding the Fourth Proportional to 21,318.36, 29,411.60 and 12,360.92

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Solution

The fourth proportional to 21,318.36, 29,411.60 and 12,360.92 is: 17,053.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.36 : 29,411.60 = 12,360.92 : x
  2. Step 2: Convert to fraction form
    21,318.36/29,411.60 = 12,360.92/x
  3. Step 3: Cross multiply
    21,318.36x = 29,411.60 × 12,360.92
  4. Step 4: Simplify right side
    21,318.36x = 363,554,434.67
  5. Step 5: Solve for x
    x = 363,554,434.67/21,318.36
  6. Step 6: Final answer
    x = 17,053.58

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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.