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Finding the Fourth Proportional to 14,287.55, 19,719.16 and 8,544.63

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Solution

The fourth proportional to 14,287.55, 19,719.16 and 8,544.63 is: 11,792.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,287.55 : 19,719.16 = 8,544.63 : x
  2. Step 2: Convert to fraction form
    14,287.55/19,719.16 = 8,544.63/x
  3. Step 3: Cross multiply
    14,287.55x = 19,719.16 × 8,544.63
  4. Step 4: Simplify right side
    14,287.55x = 168,492,926.11
  5. Step 5: Solve for x
    x = 168,492,926.11/14,287.55
  6. Step 6: Final answer
    x = 11,792.99

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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.