Home / 28,320.06-42,480.09-12,726.75

Finding the Fourth Proportional to 28,320.06, 42,480.09 and 12,726.75

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Solution

The fourth proportional to 28,320.06, 42,480.09 and 12,726.75 is: 19,090.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,320.06 : 42,480.09 = 12,726.75 : x
  2. Step 2: Convert to fraction form
    28,320.06/42,480.09 = 12,726.75/x
  3. Step 3: Cross multiply
    28,320.06x = 42,480.09 × 12,726.75
  4. Step 4: Simplify right side
    28,320.06x = 540,633,485.41
  5. Step 5: Solve for x
    x = 540,633,485.41/28,320.06
  6. Step 6: Final answer
    x = 19,090.13

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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.