Home / 13,158.60-19,739.70-4,392.60

Finding the Fourth Proportional to 13,158.60, 19,739.70 and 4,392.60

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Solution

The fourth proportional to 13,158.60, 19,739.70 and 4,392.60 is: 6,589.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158.60 : 19,739.70 = 4,392.60 : x
  2. Step 2: Convert to fraction form
    13,158.60/19,739.70 = 4,392.60/x
  3. Step 3: Cross multiply
    13,158.60x = 19,739.70 × 4,392.60
  4. Step 4: Simplify right side
    13,158.60x = 86,708,606.22
  5. Step 5: Solve for x
    x = 86,708,606.22/13,158.60
  6. Step 6: Final answer
    x = 6,589.50

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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.