Home / 15,631.84-23,420.20-8,218.72

Finding the Fourth Proportional to 15,631.84, 23,420.20 and 8,218.72

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Solution

The fourth proportional to 15,631.84, 23,420.20 and 8,218.72 is: 12,313.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,631.84 : 23,420.20 = 8,218.72 : x
  2. Step 2: Convert to fraction form
    15,631.84/23,420.20 = 8,218.72/x
  3. Step 3: Cross multiply
    15,631.84x = 23,420.20 × 8,218.72
  4. Step 4: Simplify right side
    15,631.84x = 192,484,066.14
  5. Step 5: Solve for x
    x = 192,484,066.14/15,631.84
  6. Step 6: Final answer
    x = 12,313.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.