Home / 13,007.40-19,515.90-4,242.60

Finding the Fourth Proportional to 13,007.40, 19,515.90 and 4,242.60

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Solution

The fourth proportional to 13,007.40, 19,515.90 and 4,242.60 is: 6,365.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,007.40 : 19,515.90 = 4,242.60 : x
  2. Step 2: Convert to fraction form
    13,007.40/19,515.90 = 4,242.60/x
  3. Step 3: Cross multiply
    13,007.40x = 19,515.90 × 4,242.60
  4. Step 4: Simplify right side
    13,007.40x = 82,798,157.34
  5. Step 5: Solve for x
    x = 82,798,157.34/13,007.40
  6. Step 6: Final answer
    x = 6,365.47

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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.