Home / 14,859.40-20,513.10-11,872.12

Finding the Fourth Proportional to 14,859.40, 20,513.10 and 11,872.12

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Solution

The fourth proportional to 14,859.40, 20,513.10 and 11,872.12 is: 16,389.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,859.40 : 20,513.10 = 11,872.12 : x
  2. Step 2: Convert to fraction form
    14,859.40/20,513.10 = 11,872.12/x
  3. Step 3: Cross multiply
    14,859.40x = 20,513.10 × 11,872.12
  4. Step 4: Simplify right side
    14,859.40x = 243,533,984.77
  5. Step 5: Solve for x
    x = 243,533,984.77/14,859.40
  6. Step 6: Final answer
    x = 16,389.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.