Home / 28,056.48-38,715.21-15,480.42

Finding the Fourth Proportional to 28,056.48, 38,715.21 and 15,480.42

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Solution

The fourth proportional to 28,056.48, 38,715.21 and 15,480.42 is: 21,361.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,056.48 : 38,715.21 = 15,480.42 : x
  2. Step 2: Convert to fraction form
    28,056.48/38,715.21 = 15,480.42/x
  3. Step 3: Cross multiply
    28,056.48x = 38,715.21 × 15,480.42
  4. Step 4: Simplify right side
    28,056.48x = 599,327,711.19
  5. Step 5: Solve for x
    x = 599,327,711.19/28,056.48
  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.