Home / 13,325.12-18,394.14-9,090.16

Finding the Fourth Proportional to 13,325.12, 18,394.14 and 9,090.16

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Solution

The fourth proportional to 13,325.12, 18,394.14 and 9,090.16 is: 12,548.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.12 : 18,394.14 = 9,090.16 : x
  2. Step 2: Convert to fraction form
    13,325.12/18,394.14 = 9,090.16/x
  3. Step 3: Cross multiply
    13,325.12x = 18,394.14 × 9,090.16
  4. Step 4: Simplify right side
    13,325.12x = 167,205,675.66
  5. Step 5: Solve for x
    x = 167,205,675.66/13,325.12
  6. Step 6: Final answer
    x = 12,548.16

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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.