Home / 28,478.56-39,299.16-15,903.04

Finding the Fourth Proportional to 28,478.56, 39,299.16 and 15,903.04

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Solution

The fourth proportional to 28,478.56, 39,299.16 and 15,903.04 is: 21,945.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,478.56 : 39,299.16 = 15,903.04 : x
  2. Step 2: Convert to fraction form
    28,478.56/39,299.16 = 15,903.04/x
  3. Step 3: Cross multiply
    28,478.56x = 39,299.16 × 15,903.04
  4. Step 4: Simplify right side
    28,478.56x = 624,976,113.45
  5. Step 5: Solve for x
    x = 624,976,113.45/28,478.56
  6. Step 6: Final answer
    x = 21,945.50

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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.