Home / 21,021.16-29,009.58-11,461.12

Finding the Fourth Proportional to 21,021.16, 29,009.58 and 11,461.12

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Solution

The fourth proportional to 21,021.16, 29,009.58 and 11,461.12 is: 15,816.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.16 : 29,009.58 = 11,461.12 : x
  2. Step 2: Convert to fraction form
    21,021.16/29,009.58 = 11,461.12/x
  3. Step 3: Cross multiply
    21,021.16x = 29,009.58 × 11,461.12
  4. Step 4: Simplify right side
    21,021.16x = 332,482,277.53
  5. Step 5: Solve for x
    x = 332,482,277.53/21,021.16
  6. Step 6: Final answer
    x = 15,816.55

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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.