Home / 21,308.93-29,406.71-11,876.48

Finding the Fourth Proportional to 21,308.93, 29,406.71 and 11,876.48

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Solution

The fourth proportional to 21,308.93, 29,406.71 and 11,876.48 is: 16,389.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.93 : 29,406.71 = 11,876.48 : x
  2. Step 2: Convert to fraction form
    21,308.93/29,406.71 = 11,876.48/x
  3. Step 3: Cross multiply
    21,308.93x = 29,406.71 × 11,876.48
  4. Step 4: Simplify right side
    21,308.93x = 349,248,203.18
  5. Step 5: Solve for x
    x = 349,248,203.18/21,308.93
  6. Step 6: Final answer
    x = 16,389.76

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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.