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Finding the Fourth Proportional to 21,703.95, 29,954.91 and 12,753.65

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Solution

The fourth proportional to 21,703.95, 29,954.91 and 12,753.65 is: 17,602.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,703.95 : 29,954.91 = 12,753.65 : x
  2. Step 2: Convert to fraction form
    21,703.95/29,954.91 = 12,753.65/x
  3. Step 3: Cross multiply
    21,703.95x = 29,954.91 × 12,753.65
  4. Step 4: Simplify right side
    21,703.95x = 382,034,560.63
  5. Step 5: Solve for x
    x = 382,034,560.63/21,703.95
  6. Step 6: Final answer
    x = 17,602.08

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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.