Home / 13,621.32-18,790.98-11,653.02

Finding the Fourth Proportional to 13,621.32, 18,790.98 and 11,653.02

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Solution

The fourth proportional to 13,621.32, 18,790.98 and 11,653.02 is: 16,075.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.32 : 18,790.98 = 11,653.02 : x
  2. Step 2: Convert to fraction form
    13,621.32/18,790.98 = 11,653.02/x
  3. Step 3: Cross multiply
    13,621.32x = 18,790.98 × 11,653.02
  4. Step 4: Simplify right side
    13,621.32x = 218,971,665.76
  5. Step 5: Solve for x
    x = 218,971,665.76/13,621.32
  6. Step 6: Final answer
    x = 16,075.66

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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.