Home / 15,697.08-21,661.98-8,623.96

Finding the Fourth Proportional to 15,697.08, 21,661.98 and 8,623.96

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Solution

The fourth proportional to 15,697.08, 21,661.98 and 8,623.96 is: 11,901.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,697.08 : 21,661.98 = 8,623.96 : x
  2. Step 2: Convert to fraction form
    15,697.08/21,661.98 = 8,623.96/x
  3. Step 3: Cross multiply
    15,697.08x = 21,661.98 × 8,623.96
  4. Step 4: Simplify right side
    15,697.08x = 186,811,962.55
  5. Step 5: Solve for x
    x = 186,811,962.55/15,697.08
  6. Step 6: Final answer
    x = 11,901.06

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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.