Home / 28,471.56-39,289.50-15,896.04

Finding the Fourth Proportional to 28,471.56, 39,289.50 and 15,896.04

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Solution

The fourth proportional to 28,471.56, 39,289.50 and 15,896.04 is: 21,935.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,471.56 : 39,289.50 = 15,896.04 : x
  2. Step 2: Convert to fraction form
    28,471.56/39,289.50 = 15,896.04/x
  3. Step 3: Cross multiply
    28,471.56x = 39,289.50 × 15,896.04
  4. Step 4: Simplify right side
    28,471.56x = 624,547,463.58
  5. Step 5: Solve for x
    x = 624,547,463.58/28,471.56
  6. Step 6: Final answer
    x = 21,935.84

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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.