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Finding the Fourth Proportional to 13,960.81, 20,946.08 and 6,570.91

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Solution

The fourth proportional to 13,960.81, 20,946.08 and 6,570.91 is: 9,858.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,960.81 : 20,946.08 = 6,570.91 : x
  2. Step 2: Convert to fraction form
    13,960.81/20,946.08 = 6,570.91/x
  3. Step 3: Cross multiply
    13,960.81x = 20,946.08 × 6,570.91
  4. Step 4: Simplify right side
    13,960.81x = 137,634,806.53
  5. Step 5: Solve for x
    x = 137,634,806.53/13,960.81
  6. Step 6: Final answer
    x = 9,858.65

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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.