Home / 15,530.08-21,431.61-8,456.53

Finding the Fourth Proportional to 15,530.08, 21,431.61 and 8,456.53

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Solution

The fourth proportional to 15,530.08, 21,431.61 and 8,456.53 is: 11,670.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,530.08 : 21,431.61 = 8,456.53 : x
  2. Step 2: Convert to fraction form
    15,530.08/21,431.61 = 8,456.53/x
  3. Step 3: Cross multiply
    15,530.08x = 21,431.61 × 8,456.53
  4. Step 4: Simplify right side
    15,530.08x = 181,237,052.91
  5. Step 5: Solve for x
    x = 181,237,052.91/15,530.08
  6. Step 6: Final answer
    x = 11,670.07

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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.