Home / 20,533.44-28,348.80-15,808.64

Finding the Fourth Proportional to 20,533.44, 28,348.80 and 15,808.64

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Solution

The fourth proportional to 20,533.44, 28,348.80 and 15,808.64 is: 21,825.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533.44 : 28,348.80 = 15,808.64 : x
  2. Step 2: Convert to fraction form
    20,533.44/28,348.80 = 15,808.64/x
  3. Step 3: Cross multiply
    20,533.44x = 28,348.80 × 15,808.64
  4. Step 4: Simplify right side
    20,533.44x = 448,155,973.63
  5. Step 5: Solve for x
    x = 448,155,973.63/20,533.44
  6. Step 6: Final answer
    x = 21,825.66

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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.