Home / 28,869.58-39,808.60-18,779.31

Finding the Fourth Proportional to 28,869.58, 39,808.60 and 18,779.31

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Solution

The fourth proportional to 28,869.58, 39,808.60 and 18,779.31 is: 25,895.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,869.58 : 39,808.60 = 18,779.31 : x
  2. Step 2: Convert to fraction form
    28,869.58/39,808.60 = 18,779.31/x
  3. Step 3: Cross multiply
    28,869.58x = 39,808.60 × 18,779.31
  4. Step 4: Simplify right side
    28,869.58x = 747,577,993.12
  5. Step 5: Solve for x
    x = 747,577,993.12/28,869.58
  6. Step 6: Final answer
    x = 25,895.01

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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.