Home / 28,400.40-42,561.72-18,019.44

Finding the Fourth Proportional to 28,400.40, 42,561.72 and 18,019.44

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Solution

The fourth proportional to 28,400.40, 42,561.72 and 18,019.44 is: 27,004.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,400.40 : 42,561.72 = 18,019.44 : x
  2. Step 2: Convert to fraction form
    28,400.40/42,561.72 = 18,019.44/x
  3. Step 3: Cross multiply
    28,400.40x = 42,561.72 × 18,019.44
  4. Step 4: Simplify right side
    28,400.40x = 766,938,359.84
  5. Step 5: Solve for x
    x = 766,938,359.84/28,400.40
  6. Step 6: Final answer
    x = 27,004.49

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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.