Home / 17,980.38-26,923.40-12,686.81

Finding the Fourth Proportional to 17,980.38, 26,923.40 and 12,686.81

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Solution

The fourth proportional to 17,980.38, 26,923.40 and 12,686.81 is: 18,996.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,980.38 : 26,923.40 = 12,686.81 : x
  2. Step 2: Convert to fraction form
    17,980.38/26,923.40 = 12,686.81/x
  3. Step 3: Cross multiply
    17,980.38x = 26,923.40 × 12,686.81
  4. Step 4: Simplify right side
    17,980.38x = 341,572,060.35
  5. Step 5: Solve for x
    x = 341,572,060.35/17,980.38
  6. Step 6: Final answer
    x = 18,996.94

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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.