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Finding the Fourth Proportional to 13,447.51, 18,549.99 and 8,068.56

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Solution

The fourth proportional to 13,447.51, 18,549.99 and 8,068.56 is: 11,130.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.51 : 18,549.99 = 8,068.56 : x
  2. Step 2: Convert to fraction form
    13,447.51/18,549.99 = 8,068.56/x
  3. Step 3: Cross multiply
    13,447.51x = 18,549.99 × 8,068.56
  4. Step 4: Simplify right side
    13,447.51x = 149,671,681.11
  5. Step 5: Solve for x
    x = 149,671,681.11/13,447.51
  6. Step 6: Final answer
    x = 11,130.06

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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.