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Finding the Fourth Proportional to 14,354.76, 21,515.74 and 8,812.08

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Solution

The fourth proportional to 14,354.76, 21,515.74 and 8,812.08 is: 13,208.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,354.76 : 21,515.74 = 8,812.08 : x
  2. Step 2: Convert to fraction form
    14,354.76/21,515.74 = 8,812.08/x
  3. Step 3: Cross multiply
    14,354.76x = 21,515.74 × 8,812.08
  4. Step 4: Simplify right side
    14,354.76x = 189,598,400.11
  5. Step 5: Solve for x
    x = 189,598,400.11/14,354.76
  6. Step 6: Final answer
    x = 13,208.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.