Home / 14,779.32-20,394.66-8,405.05

Finding the Fourth Proportional to 14,779.32, 20,394.66 and 8,405.05

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Solution

The fourth proportional to 14,779.32, 20,394.66 and 8,405.05 is: 11,598.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,779.32 : 20,394.66 = 8,405.05 : x
  2. Step 2: Convert to fraction form
    14,779.32/20,394.66 = 8,405.05/x
  3. Step 3: Cross multiply
    14,779.32x = 20,394.66 × 8,405.05
  4. Step 4: Simplify right side
    14,779.32x = 171,418,137.03
  5. Step 5: Solve for x
    x = 171,418,137.03/14,779.32
  6. Step 6: Final answer
    x = 11,598.51

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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.