Home / 13,515.02-18,648.60-7,546.40

Finding the Fourth Proportional to 13,515.02, 18,648.60 and 7,546.40

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Solution

The fourth proportional to 13,515.02, 18,648.60 and 7,546.40 is: 10,412.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.02 : 18,648.60 = 7,546.40 : x
  2. Step 2: Convert to fraction form
    13,515.02/18,648.60 = 7,546.40/x
  3. Step 3: Cross multiply
    13,515.02x = 18,648.60 × 7,546.40
  4. Step 4: Simplify right side
    13,515.02x = 140,729,795.04
  5. Step 5: Solve for x
    x = 140,729,795.04/13,515.02
  6. Step 6: Final answer
    x = 10,412.84

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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.