Home / 13,483.75-18,607.67-7,515.80

Finding the Fourth Proportional to 13,483.75, 18,607.67 and 7,515.80

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Solution

The fourth proportional to 13,483.75, 18,607.67 and 7,515.80 is: 10,371.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,483.75 : 18,607.67 = 7,515.80 : x
  2. Step 2: Convert to fraction form
    13,483.75/18,607.67 = 7,515.80/x
  3. Step 3: Cross multiply
    13,483.75x = 18,607.67 × 7,515.80
  4. Step 4: Simplify right side
    13,483.75x = 139,851,535.13
  5. Step 5: Solve for x
    x = 139,851,535.13/13,483.75
  6. Step 6: Final answer
    x = 10,371.86

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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.