Home / 13,148.43-19,628.93-12,687.03

Finding the Fourth Proportional to 13,148.43, 19,628.93 and 12,687.03

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Solution

The fourth proportional to 13,148.43, 19,628.93 and 12,687.03 is: 18,940.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.43 : 19,628.93 = 12,687.03 : x
  2. Step 2: Convert to fraction form
    13,148.43/19,628.93 = 12,687.03/x
  3. Step 3: Cross multiply
    13,148.43x = 19,628.93 × 12,687.03
  4. Step 4: Simplify right side
    13,148.43x = 249,032,855.50
  5. Step 5: Solve for x
    x = 249,032,855.50/13,148.43
  6. Step 6: Final answer
    x = 18,940.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.