Home / 28,280.10-42,420.75-8,558.62

Finding the Fourth Proportional to 28,280.10, 42,420.75 and 8,558.62

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Solution

The fourth proportional to 28,280.10, 42,420.75 and 8,558.62 is: 12,838.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280.10 : 42,420.75 = 8,558.62 : x
  2. Step 2: Convert to fraction form
    28,280.10/42,420.75 = 8,558.62/x
  3. Step 3: Cross multiply
    28,280.10x = 42,420.75 × 8,558.62
  4. Step 4: Simplify right side
    28,280.10x = 363,063,079.37
  5. Step 5: Solve for x
    x = 363,063,079.37/28,280.10
  6. Step 6: Final answer
    x = 12,838.11

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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.