Home / 13,938.90-19,219.46-9,465.54

Finding the Fourth Proportional to 13,938.90, 19,219.46 and 9,465.54

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Solution

The fourth proportional to 13,938.90, 19,219.46 and 9,465.54 is: 13,051.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.90 : 19,219.46 = 9,465.54 : x
  2. Step 2: Convert to fraction form
    13,938.90/19,219.46 = 9,465.54/x
  3. Step 3: Cross multiply
    13,938.90x = 19,219.46 × 9,465.54
  4. Step 4: Simplify right side
    13,938.90x = 181,922,567.41
  5. Step 5: Solve for x
    x = 181,922,567.41/13,938.90
  6. Step 6: Final answer
    x = 13,051.43

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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.