Home / 13,208.60-18,227.32-7,900.28

Finding the Fourth Proportional to 13,208.60, 18,227.32 and 7,900.28

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Solution

The fourth proportional to 13,208.60, 18,227.32 and 7,900.28 is: 10,902.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.60 : 18,227.32 = 7,900.28 : x
  2. Step 2: Convert to fraction form
    13,208.60/18,227.32 = 7,900.28/x
  3. Step 3: Cross multiply
    13,208.60x = 18,227.32 × 7,900.28
  4. Step 4: Simplify right side
    13,208.60x = 144,000,931.65
  5. Step 5: Solve for x
    x = 144,000,931.65/13,208.60
  6. Step 6: Final answer
    x = 10,902.06

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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.