Home / 13,021.98-17,966.06-8,307.78

Finding the Fourth Proportional to 13,021.98, 17,966.06 and 8,307.78

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Solution

The fourth proportional to 13,021.98, 17,966.06 and 8,307.78 is: 11,462.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.98 : 17,966.06 = 8,307.78 : x
  2. Step 2: Convert to fraction form
    13,021.98/17,966.06 = 8,307.78/x
  3. Step 3: Cross multiply
    13,021.98x = 17,966.06 × 8,307.78
  4. Step 4: Simplify right side
    13,021.98x = 149,258,073.95
  5. Step 5: Solve for x
    x = 149,258,073.95/13,021.98
  6. Step 6: Final answer
    x = 11,462.01

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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.