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Finding the Fourth Proportional to 9,866.26, 13,606.95 and 8,790.99

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Solution

The fourth proportional to 9,866.26, 13,606.95 and 8,790.99 is: 12,124.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,866.26 : 13,606.95 = 8,790.99 : x
  2. Step 2: Convert to fraction form
    9,866.26/13,606.95 = 8,790.99/x
  3. Step 3: Cross multiply
    9,866.26x = 13,606.95 × 8,790.99
  4. Step 4: Simplify right side
    9,866.26x = 119,618,561.38
  5. Step 5: Solve for x
    x = 119,618,561.38/9,866.26
  6. Step 6: Final answer
    x = 12,124.00

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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.