Home / 18,688.48-28,032.72-8,828.75

Finding the Fourth Proportional to 18,688.48, 28,032.72 and 8,828.75

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Solution

The fourth proportional to 18,688.48, 28,032.72 and 8,828.75 is: 13,243.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.48 : 28,032.72 = 8,828.75 : x
  2. Step 2: Convert to fraction form
    18,688.48/28,032.72 = 8,828.75/x
  3. Step 3: Cross multiply
    18,688.48x = 28,032.72 × 8,828.75
  4. Step 4: Simplify right side
    18,688.48x = 247,493,832.56
  5. Step 5: Solve for x
    x = 247,493,832.56/18,688.48
  6. Step 6: Final answer
    x = 13,243.13

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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.