Home / 28,090.49-42,141.80-8,370.63

Finding the Fourth Proportional to 28,090.49, 42,141.80 and 8,370.63

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Solution

The fourth proportional to 28,090.49, 42,141.80 and 8,370.63 is: 12,557.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,090.49 : 42,141.80 = 8,370.63 : x
  2. Step 2: Convert to fraction form
    28,090.49/42,141.80 = 8,370.63/x
  3. Step 3: Cross multiply
    28,090.49x = 42,141.80 × 8,370.63
  4. Step 4: Simplify right side
    28,090.49x = 352,753,436.26
  5. Step 5: Solve for x
    x = 352,753,436.26/28,090.49
  6. Step 6: Final answer
    x = 12,557.76

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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.