Home / 13,775.40-20,653.85-5,009.18

Finding the Fourth Proportional to 13,775.40, 20,653.85 and 5,009.18

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Solution

The fourth proportional to 13,775.40, 20,653.85 and 5,009.18 is: 7,510.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.40 : 20,653.85 = 5,009.18 : x
  2. Step 2: Convert to fraction form
    13,775.40/20,653.85 = 5,009.18/x
  3. Step 3: Cross multiply
    13,775.40x = 20,653.85 × 5,009.18
  4. Step 4: Simplify right side
    13,775.40x = 103,458,761.60
  5. Step 5: Solve for x
    x = 103,458,761.60/13,775.40
  6. Step 6: Final answer
    x = 7,510.40

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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.