Home / 20,779.57-28,683.75-14,099.77

Finding the Fourth Proportional to 20,779.57, 28,683.75 and 14,099.77

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Solution

The fourth proportional to 20,779.57, 28,683.75 and 14,099.77 is: 19,463.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.57 : 28,683.75 = 14,099.77 : x
  2. Step 2: Convert to fraction form
    20,779.57/28,683.75 = 14,099.77/x
  3. Step 3: Cross multiply
    20,779.57x = 28,683.75 × 14,099.77
  4. Step 4: Simplify right side
    20,779.57x = 404,434,277.74
  5. Step 5: Solve for x
    x = 404,434,277.74/20,779.57
  6. Step 6: Final answer
    x = 19,463.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.