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Finding the Fourth Proportional to 11,857.35, 17,681.91 and 10,899.93

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Solution

The fourth proportional to 11,857.35, 17,681.91 and 10,899.93 is: 16,254.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,857.35 : 17,681.91 = 10,899.93 : x
  2. Step 2: Convert to fraction form
    11,857.35/17,681.91 = 10,899.93/x
  3. Step 3: Cross multiply
    11,857.35x = 17,681.91 × 10,899.93
  4. Step 4: Simplify right side
    11,857.35x = 192,731,581.27
  5. Step 5: Solve for x
    x = 192,731,581.27/11,857.35
  6. Step 6: Final answer
    x = 16,254.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.