Home / 14,154.16-21,172.68-12,871.12

Finding the Fourth Proportional to 14,154.16, 21,172.68 and 12,871.12

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Solution

The fourth proportional to 14,154.16, 21,172.68 and 12,871.12 is: 19,253.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,154.16 : 21,172.68 = 12,871.12 : x
  2. Step 2: Convert to fraction form
    14,154.16/21,172.68 = 12,871.12/x
  3. Step 3: Cross multiply
    14,154.16x = 21,172.68 × 12,871.12
  4. Step 4: Simplify right side
    14,154.16x = 272,516,105.00
  5. Step 5: Solve for x
    x = 272,516,105.00/14,154.16
  6. Step 6: Final answer
    x = 19,253.43

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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.