Home / 13,699.64-18,903.89-7,730.96

Finding the Fourth Proportional to 13,699.64, 18,903.89 and 7,730.96

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Solution

The fourth proportional to 13,699.64, 18,903.89 and 7,730.96 is: 10,667.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.64 : 18,903.89 = 7,730.96 : x
  2. Step 2: Convert to fraction form
    13,699.64/18,903.89 = 7,730.96/x
  3. Step 3: Cross multiply
    13,699.64x = 18,903.89 × 7,730.96
  4. Step 4: Simplify right side
    13,699.64x = 146,145,084.26
  5. Step 5: Solve for x
    x = 146,145,084.26/13,699.64
  6. Step 6: Final answer
    x = 10,667.81

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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.