Home / 28,427.20-42,640.80-14,603.20

Finding the Fourth Proportional to 28,427.20, 42,640.80 and 14,603.20

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Solution

The fourth proportional to 28,427.20, 42,640.80 and 14,603.20 is: 21,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427.20 : 42,640.80 = 14,603.20 : x
  2. Step 2: Convert to fraction form
    28,427.20/42,640.80 = 14,603.20/x
  3. Step 3: Cross multiply
    28,427.20x = 42,640.80 × 14,603.20
  4. Step 4: Simplify right side
    28,427.20x = 622,692,130.56
  5. Step 5: Solve for x
    x = 622,692,130.56/28,427.20
  6. Step 6: Final answer
    x = 21,904.80

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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.