Home / 12,914.02-19,355.10-7,643.80

Finding the Fourth Proportional to 12,914.02, 19,355.10 and 7,643.80

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Solution

The fourth proportional to 12,914.02, 19,355.10 and 7,643.80 is: 11,456.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,914.02 : 19,355.10 = 7,643.80 : x
  2. Step 2: Convert to fraction form
    12,914.02/19,355.10 = 7,643.80/x
  3. Step 3: Cross multiply
    12,914.02x = 19,355.10 × 7,643.80
  4. Step 4: Simplify right side
    12,914.02x = 147,946,513.38
  5. Step 5: Solve for x
    x = 147,946,513.38/12,914.02
  6. Step 6: Final answer
    x = 11,456.27

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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.