Home / 21,351.04-29,459.68-12,393.44

Finding the Fourth Proportional to 21,351.04, 29,459.68 and 12,393.44

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Solution

The fourth proportional to 21,351.04, 29,459.68 and 12,393.44 is: 17,100.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,351.04 : 29,459.68 = 12,393.44 : x
  2. Step 2: Convert to fraction form
    21,351.04/29,459.68 = 12,393.44/x
  3. Step 3: Cross multiply
    21,351.04x = 29,459.68 × 12,393.44
  4. Step 4: Simplify right side
    21,351.04x = 365,106,776.50
  5. Step 5: Solve for x
    x = 365,106,776.50/21,351.04
  6. Step 6: Final answer
    x = 17,100.19

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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.