Home / 21,845.08-30,159.96-15,485.14

Finding the Fourth Proportional to 21,845.08, 30,159.96 and 15,485.14

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Solution

The fourth proportional to 21,845.08, 30,159.96 and 15,485.14 is: 21,379.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,845.08 : 30,159.96 = 15,485.14 : x
  2. Step 2: Convert to fraction form
    21,845.08/30,159.96 = 15,485.14/x
  3. Step 3: Cross multiply
    21,845.08x = 30,159.96 × 15,485.14
  4. Step 4: Simplify right side
    21,845.08x = 467,031,202.99
  5. Step 5: Solve for x
    x = 467,031,202.99/21,845.08
  6. Step 6: Final answer
    x = 21,379.24

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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.