Home / 13,913.28-19,200.38-7,539.89

Finding the Fourth Proportional to 13,913.28, 19,200.38 and 7,539.89

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Solution

The fourth proportional to 13,913.28, 19,200.38 and 7,539.89 is: 10,405.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.28 : 19,200.38 = 7,539.89 : x
  2. Step 2: Convert to fraction form
    13,913.28/19,200.38 = 7,539.89/x
  3. Step 3: Cross multiply
    13,913.28x = 19,200.38 × 7,539.89
  4. Step 4: Simplify right side
    13,913.28x = 144,768,619.46
  5. Step 5: Solve for x
    x = 144,768,619.46/13,913.28
  6. Step 6: Final answer
    x = 10,405.07

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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.