Home / 18,784.07-28,176.12-7,688.84

Finding the Fourth Proportional to 18,784.07, 28,176.12 and 7,688.84

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Solution

The fourth proportional to 18,784.07, 28,176.12 and 7,688.84 is: 11,533.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,784.07 : 28,176.12 = 7,688.84 : x
  2. Step 2: Convert to fraction form
    18,784.07/28,176.12 = 7,688.84/x
  3. Step 3: Cross multiply
    18,784.07x = 28,176.12 × 7,688.84
  4. Step 4: Simplify right side
    18,784.07x = 216,641,678.50
  5. Step 5: Solve for x
    x = 216,641,678.50/18,784.07
  6. Step 6: Final answer
    x = 11,533.27

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Similar ratio
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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.