Home / 28,451.21-42,643.53-21,408.62

Finding the Fourth Proportional to 28,451.21, 42,643.53 and 21,408.62

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Solution

The fourth proportional to 28,451.21, 42,643.53 and 21,408.62 is: 32,087.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.21 : 42,643.53 = 21,408.62 : x
  2. Step 2: Convert to fraction form
    28,451.21/42,643.53 = 21,408.62/x
  3. Step 3: Cross multiply
    28,451.21x = 42,643.53 × 21,408.62
  4. Step 4: Simplify right side
    28,451.21x = 912,938,916.01
  5. Step 5: Solve for x
    x = 912,938,916.01/28,451.21
  6. Step 6: Final answer
    x = 32,087.88

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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.