Home / 28,635.19-39,516.50-15,890.31

Finding the Fourth Proportional to 28,635.19, 39,516.50 and 15,890.31

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Solution

The fourth proportional to 28,635.19, 39,516.50 and 15,890.31 is: 21,928.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,635.19 : 39,516.50 = 15,890.31 : x
  2. Step 2: Convert to fraction form
    28,635.19/39,516.50 = 15,890.31/x
  3. Step 3: Cross multiply
    28,635.19x = 39,516.50 × 15,890.31
  4. Step 4: Simplify right side
    28,635.19x = 627,929,385.46
  5. Step 5: Solve for x
    x = 627,929,385.46/28,635.19
  6. Step 6: Final answer
    x = 21,928.59

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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.