Home / 13,115.12-19,676.32-5,720.23

Finding the Fourth Proportional to 13,115.12, 19,676.32 and 5,720.23

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Solution

The fourth proportional to 13,115.12, 19,676.32 and 5,720.23 is: 8,581.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.12 : 19,676.32 = 5,720.23 : x
  2. Step 2: Convert to fraction form
    13,115.12/19,676.32 = 5,720.23/x
  3. Step 3: Cross multiply
    13,115.12x = 19,676.32 × 5,720.23
  4. Step 4: Simplify right side
    13,115.12x = 112,553,075.95
  5. Step 5: Solve for x
    x = 112,553,075.95/13,115.12
  6. Step 6: Final answer
    x = 8,581.93

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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.