Home / 28,002.56-42,012.76-8,281.22

Finding the Fourth Proportional to 28,002.56, 42,012.76 and 8,281.22

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Solution

The fourth proportional to 28,002.56, 42,012.76 and 8,281.22 is: 12,424.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,002.56 : 42,012.76 = 8,281.22 : x
  2. Step 2: Convert to fraction form
    28,002.56/42,012.76 = 8,281.22/x
  3. Step 3: Cross multiply
    28,002.56x = 42,012.76 × 8,281.22
  4. Step 4: Simplify right side
    28,002.56x = 347,916,908.37
  5. Step 5: Solve for x
    x = 347,916,908.37/28,002.56
  6. Step 6: Final answer
    x = 12,424.47

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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.