Home / 21,251.49-31,865.53-8,768.67

Finding the Fourth Proportional to 21,251.49, 31,865.53 and 8,768.67

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Solution

The fourth proportional to 21,251.49, 31,865.53 and 8,768.67 is: 13,148.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.49 : 31,865.53 = 8,768.67 : x
  2. Step 2: Convert to fraction form
    21,251.49/31,865.53 = 8,768.67/x
  3. Step 3: Cross multiply
    21,251.49x = 31,865.53 × 8,768.67
  4. Step 4: Simplify right side
    21,251.49x = 279,418,441.51
  5. Step 5: Solve for x
    x = 279,418,441.51/21,251.49
  6. Step 6: Final answer
    x = 13,148.18

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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.