Home / 18,950.81-28,426.31-4,909.86

Finding the Fourth Proportional to 18,950.81, 28,426.31 and 4,909.86

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Solution

The fourth proportional to 18,950.81, 28,426.31 and 4,909.86 is: 7,364.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,950.81 : 28,426.31 = 4,909.86 : x
  2. Step 2: Convert to fraction form
    18,950.81/28,426.31 = 4,909.86/x
  3. Step 3: Cross multiply
    18,950.81x = 28,426.31 × 4,909.86
  4. Step 4: Simplify right side
    18,950.81x = 139,569,196.28
  5. Step 5: Solve for x
    x = 139,569,196.28/18,950.81
  6. Step 6: Final answer
    x = 7,364.82

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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.