Home / 30,531.28-42,134.72-17,102.56

Finding the Fourth Proportional to 30,531.28, 42,134.72 and 17,102.56

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Solution

The fourth proportional to 30,531.28, 42,134.72 and 17,102.56 is: 23,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,531.28 : 42,134.72 = 17,102.56 : x
  2. Step 2: Convert to fraction form
    30,531.28/42,134.72 = 17,102.56/x
  3. Step 3: Cross multiply
    30,531.28x = 42,134.72 × 17,102.56
  4. Step 4: Simplify right side
    30,531.28x = 720,611,576.88
  5. Step 5: Solve for x
    x = 720,611,576.88/30,531.28
  6. Step 6: Final answer
    x = 23,602.40

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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.