Home / 20,437.84-28,202.34-11,485.72

Finding the Fourth Proportional to 20,437.84, 28,202.34 and 11,485.72

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Solution

The fourth proportional to 20,437.84, 28,202.34 and 11,485.72 is: 15,849.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.84 : 28,202.34 = 11,485.72 : x
  2. Step 2: Convert to fraction form
    20,437.84/28,202.34 = 11,485.72/x
  3. Step 3: Cross multiply
    20,437.84x = 28,202.34 × 11,485.72
  4. Step 4: Simplify right side
    20,437.84x = 323,924,180.58
  5. Step 5: Solve for x
    x = 323,924,180.58/20,437.84
  6. Step 6: Final answer
    x = 15,849.24

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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.