Home / 11,426.49-15,768.95-6,390.72

Finding the Fourth Proportional to 11,426.49, 15,768.95 and 6,390.72

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Solution

The fourth proportional to 11,426.49, 15,768.95 and 6,390.72 is: 8,819.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,426.49 : 15,768.95 = 6,390.72 : x
  2. Step 2: Convert to fraction form
    11,426.49/15,768.95 = 6,390.72/x
  3. Step 3: Cross multiply
    11,426.49x = 15,768.95 × 6,390.72
  4. Step 4: Simplify right side
    11,426.49x = 100,774,912.19
  5. Step 5: Solve for x
    x = 100,774,912.19/11,426.49
  6. Step 6: Final answer
    x = 8,819.41

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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.