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Finding the Fourth Proportional to 13,477.61, 18,599.29 and 7,812.68

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Solution

The fourth proportional to 13,477.61, 18,599.29 and 7,812.68 is: 10,781.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,477.61 : 18,599.29 = 7,812.68 : x
  2. Step 2: Convert to fraction form
    13,477.61/18,599.29 = 7,812.68/x
  3. Step 3: Cross multiply
    13,477.61x = 18,599.29 × 7,812.68
  4. Step 4: Simplify right side
    13,477.61x = 145,310,188.47
  5. Step 5: Solve for x
    x = 145,310,188.47/13,477.61
  6. Step 6: Final answer
    x = 10,781.60

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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.