Home / 14,019.24-20,938-12,700.36

Finding the Fourth Proportional to 14,019.24, 20,938 and 12,700.36

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Solution

The fourth proportional to 14,019.24, 20,938 and 12,700.36 is: 18,968.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,019.24 : 20,938 = 12,700.36 : x
  2. Step 2: Convert to fraction form
    14,019.24/20,938 = 12,700.36/x
  3. Step 3: Cross multiply
    14,019.24x = 20,938 × 12,700.36
  4. Step 4: Simplify right side
    14,019.24x = 265,920,137.68
  5. Step 5: Solve for x
    x = 265,920,137.68/14,019.24
  6. Step 6: Final answer
    x = 18,968.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.