Home / 21,370.84-29,495.52-12,421.12

Finding the Fourth Proportional to 21,370.84, 29,495.52 and 12,421.12

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Solution

The fourth proportional to 21,370.84, 29,495.52 and 12,421.12 is: 17,143.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,370.84 : 29,495.52 = 12,421.12 : x
  2. Step 2: Convert to fraction form
    21,370.84/29,495.52 = 12,421.12/x
  3. Step 3: Cross multiply
    21,370.84x = 29,495.52 × 12,421.12
  4. Step 4: Simplify right side
    21,370.84x = 366,367,393.38
  5. Step 5: Solve for x
    x = 366,367,393.38/21,370.84
  6. Step 6: Final answer
    x = 17,143.33

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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.