Home / 21,670.80-29,902.68-12,110.28

Finding the Fourth Proportional to 21,670.80, 29,902.68 and 12,110.28

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Solution

The fourth proportional to 21,670.80, 29,902.68 and 12,110.28 is: 16,710.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,670.80 : 29,902.68 = 12,110.28 : x
  2. Step 2: Convert to fraction form
    21,670.80/29,902.68 = 12,110.28/x
  3. Step 3: Cross multiply
    21,670.80x = 29,902.68 × 12,110.28
  4. Step 4: Simplify right side
    21,670.80x = 362,129,827.55
  5. Step 5: Solve for x
    x = 362,129,827.55/21,670.80
  6. Step 6: Final answer
    x = 16,710.50

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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.