Home / 21,308.64-29,407.32-11,877.48

Finding the Fourth Proportional to 21,308.64, 29,407.32 and 11,877.48

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Solution

The fourth proportional to 21,308.64, 29,407.32 and 11,877.48 is: 16,391.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.64 : 29,407.32 = 11,877.48 : x
  2. Step 2: Convert to fraction form
    21,308.64/29,407.32 = 11,877.48/x
  3. Step 3: Cross multiply
    21,308.64x = 29,407.32 × 11,877.48
  4. Step 4: Simplify right side
    21,308.64x = 349,284,855.15
  5. Step 5: Solve for x
    x = 349,284,855.15/21,308.64
  6. Step 6: Final answer
    x = 16,391.70

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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.