Home / 21,341.04-29,450.64-11,909.40

Finding the Fourth Proportional to 21,341.04, 29,450.64 and 11,909.40

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Solution

The fourth proportional to 21,341.04, 29,450.64 and 11,909.40 is: 16,434.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341.04 : 29,450.64 = 11,909.40 : x
  2. Step 2: Convert to fraction form
    21,341.04/29,450.64 = 11,909.40/x
  3. Step 3: Cross multiply
    21,341.04x = 29,450.64 × 11,909.40
  4. Step 4: Simplify right side
    21,341.04x = 350,739,452.02
  5. Step 5: Solve for x
    x = 350,739,452.02/21,341.04
  6. Step 6: Final answer
    x = 16,434.97

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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.