Home / 9,911.84-13,681.20-6,136.16

Finding the Fourth Proportional to 9,911.84, 13,681.20 and 6,136.16

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Solution

The fourth proportional to 9,911.84, 13,681.20 and 6,136.16 is: 8,469.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,911.84 : 13,681.20 = 6,136.16 : x
  2. Step 2: Convert to fraction form
    9,911.84/13,681.20 = 6,136.16/x
  3. Step 3: Cross multiply
    9,911.84x = 13,681.20 × 6,136.16
  4. Step 4: Simplify right side
    9,911.84x = 83,950,032.19
  5. Step 5: Solve for x
    x = 83,950,032.19/9,911.84
  6. Step 6: Final answer
    x = 8,469.67

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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.