Home / 21,317.84-29,418.66-12,370.64

Finding the Fourth Proportional to 21,317.84, 29,418.66 and 12,370.64

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Solution

The fourth proportional to 21,317.84, 29,418.66 and 12,370.64 is: 17,071.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.84 : 29,418.66 = 12,370.64 : x
  2. Step 2: Convert to fraction form
    21,317.84/29,418.66 = 12,370.64/x
  3. Step 3: Cross multiply
    21,317.84x = 29,418.66 × 12,370.64
  4. Step 4: Simplify right side
    21,317.84x = 363,927,652.14
  5. Step 5: Solve for x
    x = 363,927,652.14/21,317.84
  6. Step 6: Final answer
    x = 17,071.51

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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.