Home / 21,333.85-29,440.66-12,386.59

Finding the Fourth Proportional to 21,333.85, 29,440.66 and 12,386.59

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Solution

The fourth proportional to 21,333.85, 29,440.66 and 12,386.59 is: 17,093.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,333.85 : 29,440.66 = 12,386.59 : x
  2. Step 2: Convert to fraction form
    21,333.85/29,440.66 = 12,386.59/x
  3. Step 3: Cross multiply
    21,333.85x = 29,440.66 × 12,386.59
  4. Step 4: Simplify right side
    21,333.85x = 364,669,206.58
  5. Step 5: Solve for x
    x = 364,669,206.58/21,333.85
  6. Step 6: Final answer
    x = 17,093.46

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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.