Home / 9,420.36-14,120.65-3,178.21

Finding the Fourth Proportional to 9,420.36, 14,120.65 and 3,178.21

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Solution

The fourth proportional to 9,420.36, 14,120.65 and 3,178.21 is: 4,763.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.36 : 14,120.65 = 3,178.21 : x
  2. Step 2: Convert to fraction form
    9,420.36/14,120.65 = 3,178.21/x
  3. Step 3: Cross multiply
    9,420.36x = 14,120.65 × 3,178.21
  4. Step 4: Simplify right side
    9,420.36x = 44,878,391.04
  5. Step 5: Solve for x
    x = 44,878,391.04/9,420.36
  6. Step 6: Final answer
    x = 4,763.98

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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.