Home / 20,973.93-28,930.83-13,804.21

Finding the Fourth Proportional to 20,973.93, 28,930.83 and 13,804.21

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Solution

The fourth proportional to 20,973.93, 28,930.83 and 13,804.21 is: 19,041.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.93 : 28,930.83 = 13,804.21 : x
  2. Step 2: Convert to fraction form
    20,973.93/28,930.83 = 13,804.21/x
  3. Step 3: Cross multiply
    20,973.93x = 28,930.83 × 13,804.21
  4. Step 4: Simplify right side
    20,973.93x = 399,367,252.79
  5. Step 5: Solve for x
    x = 399,367,252.79/20,973.93
  6. Step 6: Final answer
    x = 19,041.13

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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.