Home / 28,330.89-42,501.20-8,611.44

Finding the Fourth Proportional to 28,330.89, 42,501.20 and 8,611.44

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Solution

The fourth proportional to 28,330.89, 42,501.20 and 8,611.44 is: 12,918.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,330.89 : 42,501.20 = 8,611.44 : x
  2. Step 2: Convert to fraction form
    28,330.89/42,501.20 = 8,611.44/x
  3. Step 3: Cross multiply
    28,330.89x = 42,501.20 × 8,611.44
  4. Step 4: Simplify right side
    28,330.89x = 365,996,490.67
  5. Step 5: Solve for x
    x = 365,996,490.67/28,330.89
  6. Step 6: Final answer
    x = 12,918.64

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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.