Home / 18,969.19-28,457.44-7,281.50

Finding the Fourth Proportional to 18,969.19, 28,457.44 and 7,281.50

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Solution

The fourth proportional to 18,969.19, 28,457.44 and 7,281.50 is: 10,923.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,969.19 : 28,457.44 = 7,281.50 : x
  2. Step 2: Convert to fraction form
    18,969.19/28,457.44 = 7,281.50/x
  3. Step 3: Cross multiply
    18,969.19x = 28,457.44 × 7,281.50
  4. Step 4: Simplify right side
    18,969.19x = 207,212,688.87
  5. Step 5: Solve for x
    x = 207,212,688.87/18,969.19
  6. Step 6: Final answer
    x = 10,923.65

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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.