Home / 18,928.32-26,131.80-12,223.74

Finding the Fourth Proportional to 18,928.32, 26,131.80 and 12,223.74

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Solution

The fourth proportional to 18,928.32, 26,131.80 and 12,223.74 is: 16,875.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928.32 : 26,131.80 = 12,223.74 : x
  2. Step 2: Convert to fraction form
    18,928.32/26,131.80 = 12,223.74/x
  3. Step 3: Cross multiply
    18,928.32x = 26,131.80 × 12,223.74
  4. Step 4: Simplify right side
    18,928.32x = 319,428,328.93
  5. Step 5: Solve for x
    x = 319,428,328.93/18,928.32
  6. Step 6: Final answer
    x = 16,875.68

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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.