Home / 13,480.97-18,603.68-7,818.99

Finding the Fourth Proportional to 13,480.97, 18,603.68 and 7,818.99

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Solution

The fourth proportional to 13,480.97, 18,603.68 and 7,818.99 is: 10,790.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.97 : 18,603.68 = 7,818.99 : x
  2. Step 2: Convert to fraction form
    13,480.97/18,603.68 = 7,818.99/x
  3. Step 3: Cross multiply
    13,480.97x = 18,603.68 × 7,818.99
  4. Step 4: Simplify right side
    13,480.97x = 145,461,948.79
  5. Step 5: Solve for x
    x = 145,461,948.79/13,480.97
  6. Step 6: Final answer
    x = 10,790.17

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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.