Home / 21,656.04-29,885.79-12,224.80

Finding the Fourth Proportional to 21,656.04, 29,885.79 and 12,224.80

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Solution

The fourth proportional to 21,656.04, 29,885.79 and 12,224.80 is: 16,870.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,656.04 : 29,885.79 = 12,224.80 : x
  2. Step 2: Convert to fraction form
    21,656.04/29,885.79 = 12,224.80/x
  3. Step 3: Cross multiply
    21,656.04x = 29,885.79 × 12,224.80
  4. Step 4: Simplify right side
    21,656.04x = 365,347,805.59
  5. Step 5: Solve for x
    x = 365,347,805.59/21,656.04
  6. Step 6: Final answer
    x = 16,870.48

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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.