Home / 14,166.57-21,239.48-7,143.12

Finding the Fourth Proportional to 14,166.57, 21,239.48 and 7,143.12

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Solution

The fourth proportional to 14,166.57, 21,239.48 and 7,143.12 is: 10,709.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,166.57 : 21,239.48 = 7,143.12 : x
  2. Step 2: Convert to fraction form
    14,166.57/21,239.48 = 7,143.12/x
  3. Step 3: Cross multiply
    14,166.57x = 21,239.48 × 7,143.12
  4. Step 4: Simplify right side
    14,166.57x = 151,716,154.38
  5. Step 5: Solve for x
    x = 151,716,154.38/14,166.57
  6. Step 6: Final answer
    x = 10,709.45

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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.