Home / 18,870.96-28,289.82-14,688.12

Finding the Fourth Proportional to 18,870.96, 28,289.82 and 14,688.12

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Solution

The fourth proportional to 18,870.96, 28,289.82 and 14,688.12 is: 22,019.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.96 : 28,289.82 = 14,688.12 : x
  2. Step 2: Convert to fraction form
    18,870.96/28,289.82 = 14,688.12/x
  3. Step 3: Cross multiply
    18,870.96x = 28,289.82 × 14,688.12
  4. Step 4: Simplify right side
    18,870.96x = 415,524,270.94
  5. Step 5: Solve for x
    x = 415,524,270.94/18,870.96
  6. Step 6: Final answer
    x = 22,019.24

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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.