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Finding the Fourth Proportional to 28,528.84, 42,807.84 and 12,944.44

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Solution

The fourth proportional to 28,528.84, 42,807.84 and 12,944.44 is: 19,423.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,528.84 : 42,807.84 = 12,944.44 : x
  2. Step 2: Convert to fraction form
    28,528.84/42,807.84 = 12,944.44/x
  3. Step 3: Cross multiply
    28,528.84x = 42,807.84 × 12,944.44
  4. Step 4: Simplify right side
    28,528.84x = 554,123,516.41
  5. Step 5: Solve for x
    x = 554,123,516.41/28,528.84
  6. Step 6: Final answer
    x = 19,423.28

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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.