Home / 21,378.63-32,048.45-8,240.79

Finding the Fourth Proportional to 21,378.63, 32,048.45 and 8,240.79

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Solution

The fourth proportional to 21,378.63, 32,048.45 and 8,240.79 is: 12,353.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,378.63 : 32,048.45 = 8,240.79 : x
  2. Step 2: Convert to fraction form
    21,378.63/32,048.45 = 8,240.79/x
  3. Step 3: Cross multiply
    21,378.63x = 32,048.45 × 8,240.79
  4. Step 4: Simplify right side
    21,378.63x = 264,104,505.07
  5. Step 5: Solve for x
    x = 264,104,505.07/21,378.63
  6. Step 6: Final answer
    x = 12,353.67

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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.