Home / 13,477.78-20,220.72-6,908.59

Finding the Fourth Proportional to 13,477.78, 20,220.72 and 6,908.59

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Solution

The fourth proportional to 13,477.78, 20,220.72 and 6,908.59 is: 10,364.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,477.78 : 20,220.72 = 6,908.59 : x
  2. Step 2: Convert to fraction form
    13,477.78/20,220.72 = 6,908.59/x
  3. Step 3: Cross multiply
    13,477.78x = 20,220.72 × 6,908.59
  4. Step 4: Simplify right side
    13,477.78x = 139,696,663.98
  5. Step 5: Solve for x
    x = 139,696,663.98/13,477.78
  6. Step 6: Final answer
    x = 10,364.96

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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.