Home / 13,750.90-20,627.70-5,431.75

Finding the Fourth Proportional to 13,750.90, 20,627.70 and 5,431.75

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Solution

The fourth proportional to 13,750.90, 20,627.70 and 5,431.75 is: 8,148.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.90 : 20,627.70 = 5,431.75 : x
  2. Step 2: Convert to fraction form
    13,750.90/20,627.70 = 5,431.75/x
  3. Step 3: Cross multiply
    13,750.90x = 20,627.70 × 5,431.75
  4. Step 4: Simplify right side
    13,750.90x = 112,044,509.48
  5. Step 5: Solve for x
    x = 112,044,509.48/13,750.90
  6. Step 6: Final answer
    x = 8,148.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.