Home / 21,252.83-29,312.43-13,700.39

Finding the Fourth Proportional to 21,252.83, 29,312.43 and 13,700.39

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Solution

The fourth proportional to 21,252.83, 29,312.43 and 13,700.39 is: 18,895.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,252.83 : 29,312.43 = 13,700.39 : x
  2. Step 2: Convert to fraction form
    21,252.83/29,312.43 = 13,700.39/x
  3. Step 3: Cross multiply
    21,252.83x = 29,312.43 × 13,700.39
  4. Step 4: Simplify right side
    21,252.83x = 401,591,722.85
  5. Step 5: Solve for x
    x = 401,591,722.85/21,252.83
  6. Step 6: Final answer
    x = 18,895.92

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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.