Home / 21,114.04-29,136.18-12,160.84

Finding the Fourth Proportional to 21,114.04, 29,136.18 and 12,160.84

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Solution

The fourth proportional to 21,114.04, 29,136.18 and 12,160.84 is: 16,781.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,114.04 : 29,136.18 = 12,160.84 : x
  2. Step 2: Convert to fraction form
    21,114.04/29,136.18 = 12,160.84/x
  3. Step 3: Cross multiply
    21,114.04x = 29,136.18 × 12,160.84
  4. Step 4: Simplify right side
    21,114.04x = 354,320,423.19
  5. Step 5: Solve for x
    x = 354,320,423.19/21,114.04
  6. Step 6: Final answer
    x = 16,781.27

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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.