Home / 28,428.58-39,226.98-16,489.45

Finding the Fourth Proportional to 28,428.58, 39,226.98 and 16,489.45

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Solution

The fourth proportional to 28,428.58, 39,226.98 and 16,489.45 is: 22,752.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,428.58 : 39,226.98 = 16,489.45 : x
  2. Step 2: Convert to fraction form
    28,428.58/39,226.98 = 16,489.45/x
  3. Step 3: Cross multiply
    28,428.58x = 39,226.98 × 16,489.45
  4. Step 4: Simplify right side
    28,428.58x = 646,831,325.36
  5. Step 5: Solve for x
    x = 646,831,325.36/28,428.58
  6. Step 6: Final answer
    x = 22,752.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.