Home / 13,275.80-19,913.70-9,128.60

Finding the Fourth Proportional to 13,275.80, 19,913.70 and 9,128.60

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Solution

The fourth proportional to 13,275.80, 19,913.70 and 9,128.60 is: 13,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,275.80 : 19,913.70 = 9,128.60 : x
  2. Step 2: Convert to fraction form
    13,275.80/19,913.70 = 9,128.60/x
  3. Step 3: Cross multiply
    13,275.80x = 19,913.70 × 9,128.60
  4. Step 4: Simplify right side
    13,275.80x = 181,784,201.82
  5. Step 5: Solve for x
    x = 181,784,201.82/13,275.80
  6. Step 6: Final answer
    x = 13,692.90

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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.