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Finding the Fourth Proportional to 13,549.84, 18,696.99 and 7,580.86

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Solution

The fourth proportional to 13,549.84, 18,696.99 and 7,580.86 is: 10,460.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,549.84 : 18,696.99 = 7,580.86 : x
  2. Step 2: Convert to fraction form
    13,549.84/18,696.99 = 7,580.86/x
  3. Step 3: Cross multiply
    13,549.84x = 18,696.99 × 7,580.86
  4. Step 4: Simplify right side
    13,549.84x = 141,739,263.61
  5. Step 5: Solve for x
    x = 141,739,263.61/13,549.84
  6. Step 6: Final answer
    x = 10,460.59

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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.