Home / 21,779.52-32,712.48-18,658.32

Finding the Fourth Proportional to 21,779.52, 32,712.48 and 18,658.32

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Solution

The fourth proportional to 21,779.52, 32,712.48 and 18,658.32 is: 28,024.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.52 : 32,712.48 = 18,658.32 : x
  2. Step 2: Convert to fraction form
    21,779.52/32,712.48 = 18,658.32/x
  3. Step 3: Cross multiply
    21,779.52x = 32,712.48 × 18,658.32
  4. Step 4: Simplify right side
    21,779.52x = 610,359,919.83
  5. Step 5: Solve for x
    x = 610,359,919.83/21,779.52
  6. Step 6: Final answer
    x = 28,024.49

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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.