Home / 13,485.64-18,609.67-7,517.02

Finding the Fourth Proportional to 13,485.64, 18,609.67 and 7,517.02

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Solution

The fourth proportional to 13,485.64, 18,609.67 and 7,517.02 is: 10,373.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.64 : 18,609.67 = 7,517.02 : x
  2. Step 2: Convert to fraction form
    13,485.64/18,609.67 = 7,517.02/x
  3. Step 3: Cross multiply
    13,485.64x = 18,609.67 × 7,517.02
  4. Step 4: Simplify right side
    13,485.64x = 139,889,261.58
  5. Step 5: Solve for x
    x = 139,889,261.58/13,485.64
  6. Step 6: Final answer
    x = 10,373.20

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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.