Home / 21,241.92-29,312.88-11,810.40

Finding the Fourth Proportional to 21,241.92, 29,312.88 and 11,810.40

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Solution

The fourth proportional to 21,241.92, 29,312.88 and 11,810.40 is: 16,297.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,241.92 : 29,312.88 = 11,810.40 : x
  2. Step 2: Convert to fraction form
    21,241.92/29,312.88 = 11,810.40/x
  3. Step 3: Cross multiply
    21,241.92x = 29,312.88 × 11,810.40
  4. Step 4: Simplify right side
    21,241.92x = 346,196,837.95
  5. Step 5: Solve for x
    x = 346,196,837.95/21,241.92
  6. Step 6: Final answer
    x = 16,297.81

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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.