Home / 13,585.28-20,361.51-9,878.31

Finding the Fourth Proportional to 13,585.28, 20,361.51 and 9,878.31

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Solution

The fourth proportional to 13,585.28, 20,361.51 and 9,878.31 is: 14,805.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.28 : 20,361.51 = 9,878.31 : x
  2. Step 2: Convert to fraction form
    13,585.28/20,361.51 = 9,878.31/x
  3. Step 3: Cross multiply
    13,585.28x = 20,361.51 × 9,878.31
  4. Step 4: Simplify right side
    13,585.28x = 201,137,307.85
  5. Step 5: Solve for x
    x = 201,137,307.85/13,585.28
  6. Step 6: Final answer
    x = 14,805.54

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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.