Home / 20,317.54-28,055.52-12,776.48

Finding the Fourth Proportional to 20,317.54, 28,055.52 and 12,776.48

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Solution

The fourth proportional to 20,317.54, 28,055.52 and 12,776.48 is: 17,642.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.54 : 28,055.52 = 12,776.48 : x
  2. Step 2: Convert to fraction form
    20,317.54/28,055.52 = 12,776.48/x
  3. Step 3: Cross multiply
    20,317.54x = 28,055.52 × 12,776.48
  4. Step 4: Simplify right side
    20,317.54x = 358,450,790.17
  5. Step 5: Solve for x
    x = 358,450,790.17/20,317.54
  6. Step 6: Final answer
    x = 17,642.43

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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.