Home / 13,746.12-18,969.70-7,458.54

Finding the Fourth Proportional to 13,746.12, 18,969.70 and 7,458.54

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Solution

The fourth proportional to 13,746.12, 18,969.70 and 7,458.54 is: 10,292.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746.12 : 18,969.70 = 7,458.54 : x
  2. Step 2: Convert to fraction form
    13,746.12/18,969.70 = 7,458.54/x
  3. Step 3: Cross multiply
    13,746.12x = 18,969.70 × 7,458.54
  4. Step 4: Simplify right side
    13,746.12x = 141,486,266.24
  5. Step 5: Solve for x
    x = 141,486,266.24/13,746.12
  6. Step 6: Final answer
    x = 10,292.81

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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.