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Finding the Fourth Proportional to 14,779.90, 22,141.05 and 8,919.10

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Solution

The fourth proportional to 14,779.90, 22,141.05 and 8,919.10 is: 13,361.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,779.90 : 22,141.05 = 8,919.10 : x
  2. Step 2: Convert to fraction form
    14,779.90/22,141.05 = 8,919.10/x
  3. Step 3: Cross multiply
    14,779.90x = 22,141.05 × 8,919.10
  4. Step 4: Simplify right side
    14,779.90x = 197,478,239.06
  5. Step 5: Solve for x
    x = 197,478,239.06/14,779.90
  6. Step 6: Final answer
    x = 13,361.27

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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.