Home / 18,985.18-28,468.46-11,089.68

Finding the Fourth Proportional to 18,985.18, 28,468.46 and 11,089.68

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Solution

The fourth proportional to 18,985.18, 28,468.46 and 11,089.68 is: 16,629.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,985.18 : 28,468.46 = 11,089.68 : x
  2. Step 2: Convert to fraction form
    18,985.18/28,468.46 = 11,089.68/x
  3. Step 3: Cross multiply
    18,985.18x = 28,468.46 × 11,089.68
  4. Step 4: Simplify right side
    18,985.18x = 315,706,111.49
  5. Step 5: Solve for x
    x = 315,706,111.49/18,985.18
  6. Step 6: Final answer
    x = 16,629.08

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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.