Home / 21,213.71-29,255.36-14,417.91

Finding the Fourth Proportional to 21,213.71, 29,255.36 and 14,417.91

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Solution

The fourth proportional to 21,213.71, 29,255.36 and 14,417.91 is: 19,883.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.71 : 29,255.36 = 14,417.91 : x
  2. Step 2: Convert to fraction form
    21,213.71/29,255.36 = 14,417.91/x
  3. Step 3: Cross multiply
    21,213.71x = 29,255.36 × 14,417.91
  4. Step 4: Simplify right side
    21,213.71x = 421,801,111.45
  5. Step 5: Solve for x
    x = 421,801,111.45/21,213.71
  6. Step 6: Final answer
    x = 19,883.42

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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.