Home / 20,390.54-28,161.74-14,036.63

Finding the Fourth Proportional to 20,390.54, 28,161.74 and 14,036.63

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Solution

The fourth proportional to 20,390.54, 28,161.74 and 14,036.63 is: 19,386.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390.54 : 28,161.74 = 14,036.63 : x
  2. Step 2: Convert to fraction form
    20,390.54/28,161.74 = 14,036.63/x
  3. Step 3: Cross multiply
    20,390.54x = 28,161.74 × 14,036.63
  4. Step 4: Simplify right side
    20,390.54x = 395,295,818.82
  5. Step 5: Solve for x
    x = 395,295,818.82/20,390.54
  6. Step 6: Final answer
    x = 19,386.24

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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.