Home / 28,590.28-42,894.24-12,808.60

Finding the Fourth Proportional to 28,590.28, 42,894.24 and 12,808.60

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Solution

The fourth proportional to 28,590.28, 42,894.24 and 12,808.60 is: 19,216.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,590.28 : 42,894.24 = 12,808.60 : x
  2. Step 2: Convert to fraction form
    28,590.28/42,894.24 = 12,808.60/x
  3. Step 3: Cross multiply
    28,590.28x = 42,894.24 × 12,808.60
  4. Step 4: Simplify right side
    28,590.28x = 549,415,162.46
  5. Step 5: Solve for x
    x = 549,415,162.46/28,590.28
  6. Step 6: Final answer
    x = 19,216.85

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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.