Home / 14,131.81-21,195.69-4,770.60

Finding the Fourth Proportional to 14,131.81, 21,195.69 and 4,770.60

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Solution

The fourth proportional to 14,131.81, 21,195.69 and 4,770.60 is: 7,155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,131.81 : 21,195.69 = 4,770.60 : x
  2. Step 2: Convert to fraction form
    14,131.81/21,195.69 = 4,770.60/x
  3. Step 3: Cross multiply
    14,131.81x = 21,195.69 × 4,770.60
  4. Step 4: Simplify right side
    14,131.81x = 101,116,158.71
  5. Step 5: Solve for x
    x = 101,116,158.71/14,131.81
  6. Step 6: Final answer
    x = 7,155.22

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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.