Home / 18,823.23-25,980.79-12,783.70

Finding the Fourth Proportional to 18,823.23, 25,980.79 and 12,783.70

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Solution

The fourth proportional to 18,823.23, 25,980.79 and 12,783.70 is: 17,644.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,823.23 : 25,980.79 = 12,783.70 : x
  2. Step 2: Convert to fraction form
    18,823.23/25,980.79 = 12,783.70/x
  3. Step 3: Cross multiply
    18,823.23x = 25,980.79 × 12,783.70
  4. Step 4: Simplify right side
    18,823.23x = 332,130,463.26
  5. Step 5: Solve for x
    x = 332,130,463.26/18,823.23
  6. Step 6: Final answer
    x = 17,644.71

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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.