Home / 20,639.05-28,483.32-15,594.37

Finding the Fourth Proportional to 20,639.05, 28,483.32 and 15,594.37

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Solution

The fourth proportional to 20,639.05, 28,483.32 and 15,594.37 is: 21,521.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639.05 : 28,483.32 = 15,594.37 : x
  2. Step 2: Convert to fraction form
    20,639.05/28,483.32 = 15,594.37/x
  3. Step 3: Cross multiply
    20,639.05x = 28,483.32 × 15,594.37
  4. Step 4: Simplify right side
    20,639.05x = 444,179,430.91
  5. Step 5: Solve for x
    x = 444,179,430.91/20,639.05
  6. Step 6: Final answer
    x = 21,521.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.