Home / 15,653.08-21,601.40-8,579.64

Finding the Fourth Proportional to 15,653.08, 21,601.40 and 8,579.64

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Solution

The fourth proportional to 15,653.08, 21,601.40 and 8,579.64 is: 11,839.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,653.08 : 21,601.40 = 8,579.64 : x
  2. Step 2: Convert to fraction form
    15,653.08/21,601.40 = 8,579.64/x
  3. Step 3: Cross multiply
    15,653.08x = 21,601.40 × 8,579.64
  4. Step 4: Simplify right side
    15,653.08x = 185,332,235.50
  5. Step 5: Solve for x
    x = 185,332,235.50/15,653.08
  6. Step 6: Final answer
    x = 11,839.99

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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.