Home / 20,585.36-28,404.56-11,973.45

Finding the Fourth Proportional to 20,585.36, 28,404.56 and 11,973.45

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Solution

The fourth proportional to 20,585.36, 28,404.56 and 11,973.45 is: 16,521.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,585.36 : 28,404.56 = 11,973.45 : x
  2. Step 2: Convert to fraction form
    20,585.36/28,404.56 = 11,973.45/x
  3. Step 3: Cross multiply
    20,585.36x = 28,404.56 × 11,973.45
  4. Step 4: Simplify right side
    20,585.36x = 340,100,436.91
  5. Step 5: Solve for x
    x = 340,100,436.91/20,585.36
  6. Step 6: Final answer
    x = 16,521.48

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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.