Home / 28,187.58-42,302.79-10,435.05

Finding the Fourth Proportional to 28,187.58, 42,302.79 and 10,435.05

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Solution

The fourth proportional to 28,187.58, 42,302.79 and 10,435.05 is: 15,660.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187.58 : 42,302.79 = 10,435.05 : x
  2. Step 2: Convert to fraction form
    28,187.58/42,302.79 = 10,435.05/x
  3. Step 3: Cross multiply
    28,187.58x = 42,302.79 × 10,435.05
  4. Step 4: Simplify right side
    28,187.58x = 441,431,728.79
  5. Step 5: Solve for x
    x = 441,431,728.79/28,187.58
  6. Step 6: Final answer
    x = 15,660.50

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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.