Home / 13,250.61-18,285.75-7,200.80

Finding the Fourth Proportional to 13,250.61, 18,285.75 and 7,200.80

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Solution

The fourth proportional to 13,250.61, 18,285.75 and 7,200.80 is: 9,937.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,250.61 : 18,285.75 = 7,200.80 : x
  2. Step 2: Convert to fraction form
    13,250.61/18,285.75 = 7,200.80/x
  3. Step 3: Cross multiply
    13,250.61x = 18,285.75 × 7,200.80
  4. Step 4: Simplify right side
    13,250.61x = 131,672,028.60
  5. Step 5: Solve for x
    x = 131,672,028.60/13,250.61
  6. Step 6: Final answer
    x = 9,937.05

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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.