Home / 15,822.08-21,837.80-13,166.88

Finding the Fourth Proportional to 15,822.08, 21,837.80 and 13,166.88

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Solution

The fourth proportional to 15,822.08, 21,837.80 and 13,166.88 is: 18,173.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,822.08 : 21,837.80 = 13,166.88 : x
  2. Step 2: Convert to fraction form
    15,822.08/21,837.80 = 13,166.88/x
  3. Step 3: Cross multiply
    15,822.08x = 21,837.80 × 13,166.88
  4. Step 4: Simplify right side
    15,822.08x = 287,535,692.06
  5. Step 5: Solve for x
    x = 287,535,692.06/15,822.08
  6. Step 6: Final answer
    x = 18,173.07

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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.