Home / 21,343.04-29,454.40-11,911.68

Finding the Fourth Proportional to 21,343.04, 29,454.40 and 11,911.68

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Solution

The fourth proportional to 21,343.04, 29,454.40 and 11,911.68 is: 16,438.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,343.04 : 29,454.40 = 11,911.68 : x
  2. Step 2: Convert to fraction form
    21,343.04/29,454.40 = 11,911.68/x
  3. Step 3: Cross multiply
    21,343.04x = 29,454.40 × 11,911.68
  4. Step 4: Simplify right side
    21,343.04x = 350,851,387.39
  5. Step 5: Solve for x
    x = 350,851,387.39/21,343.04
  6. Step 6: Final answer
    x = 16,438.68

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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.