Home / 21,363.04-29,478.78-12,412.42

Finding the Fourth Proportional to 21,363.04, 29,478.78 and 12,412.42

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Solution

The fourth proportional to 21,363.04, 29,478.78 and 12,412.42 is: 17,127.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,363.04 : 29,478.78 = 12,412.42 : x
  2. Step 2: Convert to fraction form
    21,363.04/29,478.78 = 12,412.42/x
  3. Step 3: Cross multiply
    21,363.04x = 29,478.78 × 12,412.42
  4. Step 4: Simplify right side
    21,363.04x = 365,902,998.45
  5. Step 5: Solve for x
    x = 365,902,998.45/21,363.04
  6. Step 6: Final answer
    x = 17,127.85

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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.