Home / 12,988.81-19,485.66-4,226.23

Finding the Fourth Proportional to 12,988.81, 19,485.66 and 4,226.23

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Solution

The fourth proportional to 12,988.81, 19,485.66 and 4,226.23 is: 6,340.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988.81 : 19,485.66 = 4,226.23 : x
  2. Step 2: Convert to fraction form
    12,988.81/19,485.66 = 4,226.23/x
  3. Step 3: Cross multiply
    12,988.81x = 19,485.66 × 4,226.23
  4. Step 4: Simplify right side
    12,988.81x = 82,350,880.86
  5. Step 5: Solve for x
    x = 82,350,880.86/12,988.81
  6. Step 6: Final answer
    x = 6,340.14

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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.