Home / 28,280.25-42,427.23-8,557.68

Finding the Fourth Proportional to 28,280.25, 42,427.23 and 8,557.68

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Solution

The fourth proportional to 28,280.25, 42,427.23 and 8,557.68 is: 12,838.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280.25 : 42,427.23 = 8,557.68 : x
  2. Step 2: Convert to fraction form
    28,280.25/42,427.23 = 8,557.68/x
  3. Step 3: Cross multiply
    28,280.25x = 42,427.23 × 8,557.68
  4. Step 4: Simplify right side
    28,280.25x = 363,078,657.63
  5. Step 5: Solve for x
    x = 363,078,657.63/28,280.25
  6. Step 6: Final answer
    x = 12,838.59

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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.