Home / 13,416.90-20,128.95-11,966.10

Finding the Fourth Proportional to 13,416.90, 20,128.95 and 11,966.10

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Solution

The fourth proportional to 13,416.90, 20,128.95 and 11,966.10 is: 17,952.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.90 : 20,128.95 = 11,966.10 : x
  2. Step 2: Convert to fraction form
    13,416.90/20,128.95 = 11,966.10/x
  3. Step 3: Cross multiply
    13,416.90x = 20,128.95 × 11,966.10
  4. Step 4: Simplify right side
    13,416.90x = 240,865,028.60
  5. Step 5: Solve for x
    x = 240,865,028.60/13,416.90
  6. Step 6: Final answer
    x = 17,952.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.