Home / 21,860.01-30,165.84-13,376.30

Finding the Fourth Proportional to 21,860.01, 30,165.84 and 13,376.30

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Solution

The fourth proportional to 21,860.01, 30,165.84 and 13,376.30 is: 18,458.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,860.01 : 30,165.84 = 13,376.30 : x
  2. Step 2: Convert to fraction form
    21,860.01/30,165.84 = 13,376.30/x
  3. Step 3: Cross multiply
    21,860.01x = 30,165.84 × 13,376.30
  4. Step 4: Simplify right side
    21,860.01x = 403,507,174.76
  5. Step 5: Solve for x
    x = 403,507,174.76/21,860.01
  6. Step 6: Final answer
    x = 18,458.69

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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.