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Finding the Fourth Proportional to 14,980.42, 20,671.90 and 8,266.06

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Solution

The fourth proportional to 14,980.42, 20,671.90 and 8,266.06 is: 11,406.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,980.42 : 20,671.90 = 8,266.06 : x
  2. Step 2: Convert to fraction form
    14,980.42/20,671.90 = 8,266.06/x
  3. Step 3: Cross multiply
    14,980.42x = 20,671.90 × 8,266.06
  4. Step 4: Simplify right side
    14,980.42x = 170,875,165.71
  5. Step 5: Solve for x
    x = 170,875,165.71/14,980.42
  6. Step 6: Final answer
    x = 11,406.57

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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.