Home / 12,157.40-18,236.10-9,968.60

Finding the Fourth Proportional to 12,157.40, 18,236.10 and 9,968.60

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Solution

The fourth proportional to 12,157.40, 18,236.10 and 9,968.60 is: 14,952.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,157.40 : 18,236.10 = 9,968.60 : x
  2. Step 2: Convert to fraction form
    12,157.40/18,236.10 = 9,968.60/x
  3. Step 3: Cross multiply
    12,157.40x = 18,236.10 × 9,968.60
  4. Step 4: Simplify right side
    12,157.40x = 181,788,386.46
  5. Step 5: Solve for x
    x = 181,788,386.46/12,157.40
  6. Step 6: Final answer
    x = 14,952.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.