Home / 13,913.55-19,200.66-7,540.32

Finding the Fourth Proportional to 13,913.55, 19,200.66 and 7,540.32

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Solution

The fourth proportional to 13,913.55, 19,200.66 and 7,540.32 is: 10,405.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.55 : 19,200.66 = 7,540.32 : x
  2. Step 2: Convert to fraction form
    13,913.55/19,200.66 = 7,540.32/x
  3. Step 3: Cross multiply
    13,913.55x = 19,200.66 × 7,540.32
  4. Step 4: Simplify right side
    13,913.55x = 144,779,164.34
  5. Step 5: Solve for x
    x = 144,779,164.34/13,913.55
  6. Step 6: Final answer
    x = 10,405.62

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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.