Home / 21,386.79-29,512.58-11,826.14

Finding the Fourth Proportional to 21,386.79, 29,512.58 and 11,826.14

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Solution

The fourth proportional to 21,386.79, 29,512.58 and 11,826.14 is: 16,319.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,386.79 : 29,512.58 = 11,826.14 : x
  2. Step 2: Convert to fraction form
    21,386.79/29,512.58 = 11,826.14/x
  3. Step 3: Cross multiply
    21,386.79x = 29,512.58 × 11,826.14
  4. Step 4: Simplify right side
    21,386.79x = 349,019,696.15
  5. Step 5: Solve for x
    x = 349,019,696.15/21,386.79
  6. Step 6: Final answer
    x = 16,319.41

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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.