Home / 13,782.34-19,021.56-9,966.37

Finding the Fourth Proportional to 13,782.34, 19,021.56 and 9,966.37

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Solution

The fourth proportional to 13,782.34, 19,021.56 and 9,966.37 is: 13,754.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782.34 : 19,021.56 = 9,966.37 : x
  2. Step 2: Convert to fraction form
    13,782.34/19,021.56 = 9,966.37/x
  3. Step 3: Cross multiply
    13,782.34x = 19,021.56 × 9,966.37
  4. Step 4: Simplify right side
    13,782.34x = 189,575,904.94
  5. Step 5: Solve for x
    x = 189,575,904.94/13,782.34
  6. Step 6: Final answer
    x = 13,754.99

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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.