Home / 22,812.84-31,479.87-12,740.67

Finding the Fourth Proportional to 22,812.84, 31,479.87 and 12,740.67

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Solution

The fourth proportional to 22,812.84, 31,479.87 and 12,740.67 is: 17,581.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,812.84 : 31,479.87 = 12,740.67 : x
  2. Step 2: Convert to fraction form
    22,812.84/31,479.87 = 12,740.67/x
  3. Step 3: Cross multiply
    22,812.84x = 31,479.87 × 12,740.67
  4. Step 4: Simplify right side
    22,812.84x = 401,074,635.31
  5. Step 5: Solve for x
    x = 401,074,635.31/22,812.84
  6. Step 6: Final answer
    x = 17,581.09

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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.