Home / 13,151.21-19,681.43-12,072.29

Finding the Fourth Proportional to 13,151.21, 19,681.43 and 12,072.29

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Solution

The fourth proportional to 13,151.21, 19,681.43 and 12,072.29 is: 18,066.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.21 : 19,681.43 = 12,072.29 : x
  2. Step 2: Convert to fraction form
    13,151.21/19,681.43 = 12,072.29/x
  3. Step 3: Cross multiply
    13,151.21x = 19,681.43 × 12,072.29
  4. Step 4: Simplify right side
    13,151.21x = 237,599,771.81
  5. Step 5: Solve for x
    x = 237,599,771.81/13,151.21
  6. Step 6: Final answer
    x = 18,066.77

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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.