Home / 21,300.03-29,409.68-13,750.76

Finding the Fourth Proportional to 21,300.03, 29,409.68 and 13,750.76

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Solution

The fourth proportional to 21,300.03, 29,409.68 and 13,750.76 is: 18,986.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,300.03 : 29,409.68 = 13,750.76 : x
  2. Step 2: Convert to fraction form
    21,300.03/29,409.68 = 13,750.76/x
  3. Step 3: Cross multiply
    21,300.03x = 29,409.68 × 13,750.76
  4. Step 4: Simplify right side
    21,300.03x = 404,405,559.26
  5. Step 5: Solve for x
    x = 404,405,559.26/21,300.03
  6. Step 6: Final answer
    x = 18,986.15

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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.