Home / 28,244.15-42,333.35-20,779.50

Finding the Fourth Proportional to 28,244.15, 42,333.35 and 20,779.50

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Solution

The fourth proportional to 28,244.15, 42,333.35 and 20,779.50 is: 31,145.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,244.15 : 42,333.35 = 20,779.50 : x
  2. Step 2: Convert to fraction form
    28,244.15/42,333.35 = 20,779.50/x
  3. Step 3: Cross multiply
    28,244.15x = 42,333.35 × 20,779.50
  4. Step 4: Simplify right side
    28,244.15x = 879,665,742.43
  5. Step 5: Solve for x
    x = 879,665,742.43/28,244.15
  6. Step 6: Final answer
    x = 31,145.07

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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.