Home / 21,330.18-29,435.44-11,770.16

Finding the Fourth Proportional to 21,330.18, 29,435.44 and 11,770.16

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Solution

The fourth proportional to 21,330.18, 29,435.44 and 11,770.16 is: 16,242.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.18 : 29,435.44 = 11,770.16 : x
  2. Step 2: Convert to fraction form
    21,330.18/29,435.44 = 11,770.16/x
  3. Step 3: Cross multiply
    21,330.18x = 29,435.44 × 11,770.16
  4. Step 4: Simplify right side
    21,330.18x = 346,459,838.47
  5. Step 5: Solve for x
    x = 346,459,838.47/21,330.18
  6. Step 6: Final answer
    x = 16,242.71

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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.