Home / 28,411.60-42,631.47-20,896.62

Finding the Fourth Proportional to 28,411.60, 42,631.47 and 20,896.62

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Solution

The fourth proportional to 28,411.60, 42,631.47 and 20,896.62 is: 31,355.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,411.60 : 42,631.47 = 20,896.62 : x
  2. Step 2: Convert to fraction form
    28,411.60/42,631.47 = 20,896.62/x
  3. Step 3: Cross multiply
    28,411.60x = 42,631.47 × 20,896.62
  4. Step 4: Simplify right side
    28,411.60x = 890,853,628.63
  5. Step 5: Solve for x
    x = 890,853,628.63/28,411.60
  6. Step 6: Final answer
    x = 31,355.28

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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.