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Finding the Fourth Proportional to 13,485.44, 18,602.88 and 9,004.16

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Solution

The fourth proportional to 13,485.44, 18,602.88 and 9,004.16 is: 12,421.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.44 : 18,602.88 = 9,004.16 : x
  2. Step 2: Convert to fraction form
    13,485.44/18,602.88 = 9,004.16/x
  3. Step 3: Cross multiply
    13,485.44x = 18,602.88 × 9,004.16
  4. Step 4: Simplify right side
    13,485.44x = 167,503,307.98
  5. Step 5: Solve for x
    x = 167,503,307.98/13,485.44
  6. Step 6: Final answer
    x = 12,421.05

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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.