Home / 13,759.85-18,983.95-8,384.15

Finding the Fourth Proportional to 13,759.85, 18,983.95 and 8,384.15

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Solution

The fourth proportional to 13,759.85, 18,983.95 and 8,384.15 is: 11,567.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,759.85 : 18,983.95 = 8,384.15 : x
  2. Step 2: Convert to fraction form
    13,759.85/18,983.95 = 8,384.15/x
  3. Step 3: Cross multiply
    13,759.85x = 18,983.95 × 8,384.15
  4. Step 4: Simplify right side
    13,759.85x = 159,164,168.51
  5. Step 5: Solve for x
    x = 159,164,168.51/13,759.85
  6. Step 6: Final answer
    x = 11,567.29

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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.