Home / 13,763.28-18,994.92-12,918.81

Finding the Fourth Proportional to 13,763.28, 18,994.92 and 12,918.81

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Solution

The fourth proportional to 13,763.28, 18,994.92 and 12,918.81 is: 17,829.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,763.28 : 18,994.92 = 12,918.81 : x
  2. Step 2: Convert to fraction form
    13,763.28/18,994.92 = 12,918.81/x
  3. Step 3: Cross multiply
    13,763.28x = 18,994.92 × 12,918.81
  4. Step 4: Simplify right side
    13,763.28x = 245,391,762.45
  5. Step 5: Solve for x
    x = 245,391,762.45/13,763.28
  6. Step 6: Final answer
    x = 17,829.45

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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.