Home / 13,571.90-18,729.12-7,603.62

Finding the Fourth Proportional to 13,571.90, 18,729.12 and 7,603.62

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Solution

The fourth proportional to 13,571.90, 18,729.12 and 7,603.62 is: 10,492.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571.90 : 18,729.12 = 7,603.62 : x
  2. Step 2: Convert to fraction form
    13,571.90/18,729.12 = 7,603.62/x
  3. Step 3: Cross multiply
    13,571.90x = 18,729.12 × 7,603.62
  4. Step 4: Simplify right side
    13,571.90x = 142,409,111.41
  5. Step 5: Solve for x
    x = 142,409,111.41/13,571.90
  6. Step 6: Final answer
    x = 10,492.94

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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.