Home / 20,963.42-31,435.08-9,860.74

Finding the Fourth Proportional to 20,963.42, 31,435.08 and 9,860.74

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Solution

The fourth proportional to 20,963.42, 31,435.08 and 9,860.74 is: 14,786.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.42 : 31,435.08 = 9,860.74 : x
  2. Step 2: Convert to fraction form
    20,963.42/31,435.08 = 9,860.74/x
  3. Step 3: Cross multiply
    20,963.42x = 31,435.08 × 9,860.74
  4. Step 4: Simplify right side
    20,963.42x = 309,973,150.76
  5. Step 5: Solve for x
    x = 309,973,150.76/20,963.42
  6. Step 6: Final answer
    x = 14,786.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.