Home / 28,575.54-42,873.41-12,779.18

Finding the Fourth Proportional to 28,575.54, 42,873.41 and 12,779.18

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Solution

The fourth proportional to 28,575.54, 42,873.41 and 12,779.18 is: 19,173.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,575.54 : 42,873.41 = 12,779.18 : x
  2. Step 2: Convert to fraction form
    28,575.54/42,873.41 = 12,779.18/x
  3. Step 3: Cross multiply
    28,575.54x = 42,873.41 × 12,779.18
  4. Step 4: Simplify right side
    28,575.54x = 547,887,023.60
  5. Step 5: Solve for x
    x = 547,887,023.60/28,575.54
  6. Step 6: Final answer
    x = 19,173.29

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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.