Home / 15,388.08-21,231.77-8,673.72

Finding the Fourth Proportional to 15,388.08, 21,231.77 and 8,673.72

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Solution

The fourth proportional to 15,388.08, 21,231.77 and 8,673.72 is: 11,967.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.08 : 21,231.77 = 8,673.72 : x
  2. Step 2: Convert to fraction form
    15,388.08/21,231.77 = 8,673.72/x
  3. Step 3: Cross multiply
    15,388.08x = 21,231.77 × 8,673.72
  4. Step 4: Simplify right side
    15,388.08x = 184,158,384.72
  5. Step 5: Solve for x
    x = 184,158,384.72/15,388.08
  6. Step 6: Final answer
    x = 11,967.60

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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.