Home / 21,621.04-29,855.63-13,677.37

Finding the Fourth Proportional to 21,621.04, 29,855.63 and 13,677.37

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Solution

The fourth proportional to 21,621.04, 29,855.63 and 13,677.37 is: 18,886.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621.04 : 29,855.63 = 13,677.37 : x
  2. Step 2: Convert to fraction form
    21,621.04/29,855.63 = 13,677.37/x
  3. Step 3: Cross multiply
    21,621.04x = 29,855.63 × 13,677.37
  4. Step 4: Simplify right side
    21,621.04x = 408,346,457.65
  5. Step 5: Solve for x
    x = 408,346,457.65/21,621.04
  6. Step 6: Final answer
    x = 18,886.53

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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.