Home / 28,313.12-42,425.40-17,903

Finding the Fourth Proportional to 28,313.12, 42,425.40 and 17,903

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Solution

The fourth proportional to 28,313.12, 42,425.40 and 17,903 is: 26,826.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,313.12 : 42,425.40 = 17,903 : x
  2. Step 2: Convert to fraction form
    28,313.12/42,425.40 = 17,903/x
  3. Step 3: Cross multiply
    28,313.12x = 42,425.40 × 17,903
  4. Step 4: Simplify right side
    28,313.12x = 759,541,936.20
  5. Step 5: Solve for x
    x = 759,541,936.20/28,313.12
  6. Step 6: Final answer
    x = 26,826.50

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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.