Home / 13,686.98-18,888.17-8,025.08

Finding the Fourth Proportional to 13,686.98, 18,888.17 and 8,025.08

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Solution

The fourth proportional to 13,686.98, 18,888.17 and 8,025.08 is: 11,074.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686.98 : 18,888.17 = 8,025.08 : x
  2. Step 2: Convert to fraction form
    13,686.98/18,888.17 = 8,025.08/x
  3. Step 3: Cross multiply
    13,686.98x = 18,888.17 × 8,025.08
  4. Step 4: Simplify right side
    13,686.98x = 151,579,075.30
  5. Step 5: Solve for x
    x = 151,579,075.30/13,686.98
  6. Step 6: Final answer
    x = 11,074.69

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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.