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Finding the Fourth Proportional to 28,018.53, 42,033.95 and 8,298.63

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Solution

The fourth proportional to 28,018.53, 42,033.95 and 8,298.63 is: 12,449.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018.53 : 42,033.95 = 8,298.63 : x
  2. Step 2: Convert to fraction form
    28,018.53/42,033.95 = 8,298.63/x
  3. Step 3: Cross multiply
    28,018.53x = 42,033.95 × 8,298.63
  4. Step 4: Simplify right side
    28,018.53x = 348,824,157.00
  5. Step 5: Solve for x
    x = 348,824,157.00/28,018.53
  6. Step 6: Final answer
    x = 12,449.77

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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.