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Finding the Fourth Proportional to 28,159.84, 42,230.04 and 8,433.10

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Solution

The fourth proportional to 28,159.84, 42,230.04 and 8,433.10 is: 12,646.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,159.84 : 42,230.04 = 8,433.10 : x
  2. Step 2: Convert to fraction form
    28,159.84/42,230.04 = 8,433.10/x
  3. Step 3: Cross multiply
    28,159.84x = 42,230.04 × 8,433.10
  4. Step 4: Simplify right side
    28,159.84x = 356,130,150.32
  5. Step 5: Solve for x
    x = 356,130,150.32/28,159.84
  6. Step 6: Final answer
    x = 12,646.74

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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.