Home / 12,812.49-19,220.79-5,417.03

Finding the Fourth Proportional to 12,812.49, 19,220.79 and 5,417.03

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Solution

The fourth proportional to 12,812.49, 19,220.79 and 5,417.03 is: 8,126.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,812.49 : 19,220.79 = 5,417.03 : x
  2. Step 2: Convert to fraction form
    12,812.49/19,220.79 = 5,417.03/x
  3. Step 3: Cross multiply
    12,812.49x = 19,220.79 × 5,417.03
  4. Step 4: Simplify right side
    12,812.49x = 104,119,499.95
  5. Step 5: Solve for x
    x = 104,119,499.95/12,812.49
  6. Step 6: Final answer
    x = 8,126.41

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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.