Home / 18,721.67-25,846.28-12,762.09

Finding the Fourth Proportional to 18,721.67, 25,846.28 and 12,762.09

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Solution

The fourth proportional to 18,721.67, 25,846.28 and 12,762.09 is: 17,618.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.67 : 25,846.28 = 12,762.09 : x
  2. Step 2: Convert to fraction form
    18,721.67/25,846.28 = 12,762.09/x
  3. Step 3: Cross multiply
    18,721.67x = 25,846.28 × 12,762.09
  4. Step 4: Simplify right side
    18,721.67x = 329,852,487.71
  5. Step 5: Solve for x
    x = 329,852,487.71/18,721.67
  6. Step 6: Final answer
    x = 17,618.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.