Home / 10,420.49-14,380.28-5,704.77

Finding the Fourth Proportional to 10,420.49, 14,380.28 and 5,704.77

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Solution

The fourth proportional to 10,420.49, 14,380.28 and 5,704.77 is: 7,872.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.49 : 14,380.28 = 5,704.77 : x
  2. Step 2: Convert to fraction form
    10,420.49/14,380.28 = 5,704.77/x
  3. Step 3: Cross multiply
    10,420.49x = 14,380.28 × 5,704.77
  4. Step 4: Simplify right side
    10,420.49x = 82,036,161.41
  5. Step 5: Solve for x
    x = 82,036,161.41/10,420.49
  6. Step 6: Final answer
    x = 7,872.58

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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.