Home / 28,086.32-42,142.44-14,045.78

Finding the Fourth Proportional to 28,086.32, 42,142.44 and 14,045.78

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Solution

The fourth proportional to 28,086.32, 42,142.44 and 14,045.78 is: 21,075.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,086.32 : 42,142.44 = 14,045.78 : x
  2. Step 2: Convert to fraction form
    28,086.32/42,142.44 = 14,045.78/x
  3. Step 3: Cross multiply
    28,086.32x = 42,142.44 × 14,045.78
  4. Step 4: Simplify right side
    28,086.32x = 591,923,440.90
  5. Step 5: Solve for x
    x = 591,923,440.90/28,086.32
  6. Step 6: Final answer
    x = 21,075.15

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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.