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Finding the Fourth Proportional to 12,955.13, 19,435.95 and 3,721.13

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Solution

The fourth proportional to 12,955.13, 19,435.95 and 3,721.13 is: 5,582.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,955.13 : 19,435.95 = 3,721.13 : x
  2. Step 2: Convert to fraction form
    12,955.13/19,435.95 = 3,721.13/x
  3. Step 3: Cross multiply
    12,955.13x = 19,435.95 × 3,721.13
  4. Step 4: Simplify right side
    12,955.13x = 72,323,599.44
  5. Step 5: Solve for x
    x = 72,323,599.44/12,955.13
  6. Step 6: Final answer
    x = 5,582.62

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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.