Home / 28,455.98-42,683.56-12,873.60

Finding the Fourth Proportional to 28,455.98, 42,683.56 and 12,873.60

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Solution

The fourth proportional to 28,455.98, 42,683.56 and 12,873.60 is: 19,310.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455.98 : 42,683.56 = 12,873.60 : x
  2. Step 2: Convert to fraction form
    28,455.98/42,683.56 = 12,873.60/x
  3. Step 3: Cross multiply
    28,455.98x = 42,683.56 × 12,873.60
  4. Step 4: Simplify right side
    28,455.98x = 549,491,045.83
  5. Step 5: Solve for x
    x = 549,491,045.83/28,455.98
  6. Step 6: Final answer
    x = 19,310.22

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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.