Home / 13,295.04-18,348.30-7,989

Finding the Fourth Proportional to 13,295.04, 18,348.30 and 7,989

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Solution

The fourth proportional to 13,295.04, 18,348.30 and 7,989 is: 11,025.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,295.04 : 18,348.30 = 7,989 : x
  2. Step 2: Convert to fraction form
    13,295.04/18,348.30 = 7,989/x
  3. Step 3: Cross multiply
    13,295.04x = 18,348.30 × 7,989
  4. Step 4: Simplify right side
    13,295.04x = 146,584,568.70
  5. Step 5: Solve for x
    x = 146,584,568.70/13,295.04
  6. Step 6: Final answer
    x = 11,025.51

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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.