Home / 15,485.34-21,369.87-8,412.06

Finding the Fourth Proportional to 15,485.34, 21,369.87 and 8,412.06

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Solution

The fourth proportional to 15,485.34, 21,369.87 and 8,412.06 is: 11,608.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.34 : 21,369.87 = 8,412.06 : x
  2. Step 2: Convert to fraction form
    15,485.34/21,369.87 = 8,412.06/x
  3. Step 3: Cross multiply
    15,485.34x = 21,369.87 × 8,412.06
  4. Step 4: Simplify right side
    15,485.34x = 179,764,628.63
  5. Step 5: Solve for x
    x = 179,764,628.63/15,485.34
  6. Step 6: Final answer
    x = 11,608.70

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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.