Home / 13,520.28-18,647.70-11,635.04

Finding the Fourth Proportional to 13,520.28, 18,647.70 and 11,635.04

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Solution

The fourth proportional to 13,520.28, 18,647.70 and 11,635.04 is: 16,047.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.28 : 18,647.70 = 11,635.04 : x
  2. Step 2: Convert to fraction form
    13,520.28/18,647.70 = 11,635.04/x
  3. Step 3: Cross multiply
    13,520.28x = 18,647.70 × 11,635.04
  4. Step 4: Simplify right side
    13,520.28x = 216,966,642.17
  5. Step 5: Solve for x
    x = 216,966,642.17/13,520.28
  6. Step 6: Final answer
    x = 16,047.50

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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.