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Finding the Fourth Proportional to 28,508.70, 42,732.81 and 10,970.94

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Solution

The fourth proportional to 28,508.70, 42,732.81 and 10,970.94 is: 16,444.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508.70 : 42,732.81 = 10,970.94 : x
  2. Step 2: Convert to fraction form
    28,508.70/42,732.81 = 10,970.94/x
  3. Step 3: Cross multiply
    28,508.70x = 42,732.81 × 10,970.94
  4. Step 4: Simplify right side
    28,508.70x = 468,819,094.54
  5. Step 5: Solve for x
    x = 468,819,094.54/28,508.70
  6. Step 6: Final answer
    x = 16,444.77

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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.