Home / 21,274.83-29,363.72-12,777.35

Finding the Fourth Proportional to 21,274.83, 29,363.72 and 12,777.35

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Solution

The fourth proportional to 21,274.83, 29,363.72 and 12,777.35 is: 17,635.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.83 : 29,363.72 = 12,777.35 : x
  2. Step 2: Convert to fraction form
    21,274.83/29,363.72 = 12,777.35/x
  3. Step 3: Cross multiply
    21,274.83x = 29,363.72 × 12,777.35
  4. Step 4: Simplify right side
    21,274.83x = 375,190,317.04
  5. Step 5: Solve for x
    x = 375,190,317.04/21,274.83
  6. Step 6: Final answer
    x = 17,635.41

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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.