Home / 28,087.71-42,135.89-10,558.77

Finding the Fourth Proportional to 28,087.71, 42,135.89 and 10,558.77

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Solution

The fourth proportional to 28,087.71, 42,135.89 and 10,558.77 is: 15,839.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,087.71 : 42,135.89 = 10,558.77 : x
  2. Step 2: Convert to fraction form
    28,087.71/42,135.89 = 10,558.77/x
  3. Step 3: Cross multiply
    28,087.71x = 42,135.89 × 10,558.77
  4. Step 4: Simplify right side
    28,087.71x = 444,903,118.46
  5. Step 5: Solve for x
    x = 444,903,118.46/28,087.71
  6. Step 6: Final answer
    x = 15,839.78

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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.