Home / 28,133.30-42,187.80-14,087.90

Finding the Fourth Proportional to 28,133.30, 42,187.80 and 14,087.90

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Solution

The fourth proportional to 28,133.30, 42,187.80 and 14,087.90 is: 21,125.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,133.30 : 42,187.80 = 14,087.90 : x
  2. Step 2: Convert to fraction form
    28,133.30/42,187.80 = 14,087.90/x
  3. Step 3: Cross multiply
    28,133.30x = 42,187.80 × 14,087.90
  4. Step 4: Simplify right side
    28,133.30x = 594,337,507.62
  5. Step 5: Solve for x
    x = 594,337,507.62/28,133.30
  6. Step 6: Final answer
    x = 21,125.77

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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.