Home / 21,340.04-29,451.30-11,909.48

Finding the Fourth Proportional to 21,340.04, 29,451.30 and 11,909.48

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Solution

The fourth proportional to 21,340.04, 29,451.30 and 11,909.48 is: 16,436.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.04 : 29,451.30 = 11,909.48 : x
  2. Step 2: Convert to fraction form
    21,340.04/29,451.30 = 11,909.48/x
  3. Step 3: Cross multiply
    21,340.04x = 29,451.30 × 11,909.48
  4. Step 4: Simplify right side
    21,340.04x = 350,749,668.32
  5. Step 5: Solve for x
    x = 350,749,668.32/21,340.04
  6. Step 6: Final answer
    x = 16,436.22

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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.