Home / 28,056.46-38,715.22-15,480.40

Finding the Fourth Proportional to 28,056.46, 38,715.22 and 15,480.40

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Solution

The fourth proportional to 28,056.46, 38,715.22 and 15,480.40 is: 21,361.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,056.46 : 38,715.22 = 15,480.40 : x
  2. Step 2: Convert to fraction form
    28,056.46/38,715.22 = 15,480.40/x
  3. Step 3: Cross multiply
    28,056.46x = 38,715.22 × 15,480.40
  4. Step 4: Simplify right side
    28,056.46x = 599,327,091.69
  5. Step 5: Solve for x
    x = 599,327,091.69/28,056.46
  6. Step 6: Final answer
    x = 21,361.47

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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.