Home / 20,858.46-28,809.96-15,184.23

Finding the Fourth Proportional to 20,858.46, 28,809.96 and 15,184.23

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Solution

The fourth proportional to 20,858.46, 28,809.96 and 15,184.23 is: 20,972.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858.46 : 28,809.96 = 15,184.23 : x
  2. Step 2: Convert to fraction form
    20,858.46/28,809.96 = 15,184.23/x
  3. Step 3: Cross multiply
    20,858.46x = 28,809.96 × 15,184.23
  4. Step 4: Simplify right side
    20,858.46x = 437,457,058.93
  5. Step 5: Solve for x
    x = 437,457,058.93/20,858.46
  6. Step 6: Final answer
    x = 20,972.64

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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.