Home / 20,865.63-28,794.36-11,434.53

Finding the Fourth Proportional to 20,865.63, 28,794.36 and 11,434.53

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Solution

The fourth proportional to 20,865.63, 28,794.36 and 11,434.53 is: 15,779.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.63 : 28,794.36 = 11,434.53 : x
  2. Step 2: Convert to fraction form
    20,865.63/28,794.36 = 11,434.53/x
  3. Step 3: Cross multiply
    20,865.63x = 28,794.36 × 11,434.53
  4. Step 4: Simplify right side
    20,865.63x = 329,249,973.25
  5. Step 5: Solve for x
    x = 329,249,973.25/20,865.63
  6. Step 6: Final answer
    x = 15,779.54

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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.