Home / 13,937.48-20,872.13-12,588.11

Finding the Fourth Proportional to 13,937.48, 20,872.13 and 12,588.11

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Solution

The fourth proportional to 13,937.48, 20,872.13 and 12,588.11 is: 18,851.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,937.48 : 20,872.13 = 12,588.11 : x
  2. Step 2: Convert to fraction form
    13,937.48/20,872.13 = 12,588.11/x
  3. Step 3: Cross multiply
    13,937.48x = 20,872.13 × 12,588.11
  4. Step 4: Simplify right side
    13,937.48x = 262,740,501.07
  5. Step 5: Solve for x
    x = 262,740,501.07/13,937.48
  6. Step 6: Final answer
    x = 18,851.37

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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.