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Finding the Fourth Proportional to 14,779.66, 20,396.05 and 8,065.34

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Solution

The fourth proportional to 14,779.66, 20,396.05 and 8,065.34 is: 11,130.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,779.66 : 20,396.05 = 8,065.34 : x
  2. Step 2: Convert to fraction form
    14,779.66/20,396.05 = 8,065.34/x
  3. Step 3: Cross multiply
    14,779.66x = 20,396.05 × 8,065.34
  4. Step 4: Simplify right side
    14,779.66x = 164,501,077.91
  5. Step 5: Solve for x
    x = 164,501,077.91/14,779.66
  6. Step 6: Final answer
    x = 11,130.23

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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.