Home / 13,731.09-18,948.74-7,443.33

Finding the Fourth Proportional to 13,731.09, 18,948.74 and 7,443.33

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Solution

The fourth proportional to 13,731.09, 18,948.74 and 7,443.33 is: 10,271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.09 : 18,948.74 = 7,443.33 : x
  2. Step 2: Convert to fraction form
    13,731.09/18,948.74 = 7,443.33/x
  3. Step 3: Cross multiply
    13,731.09x = 18,948.74 × 7,443.33
  4. Step 4: Simplify right side
    13,731.09x = 141,041,687.69
  5. Step 5: Solve for x
    x = 141,041,687.69/13,731.09
  6. Step 6: Final answer
    x = 10,271.70

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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.