Home / 28,427.10-42,640.65-19,095.90

Finding the Fourth Proportional to 28,427.10, 42,640.65 and 19,095.90

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Solution

The fourth proportional to 28,427.10, 42,640.65 and 19,095.90 is: 28,643.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427.10 : 42,640.65 = 19,095.90 : x
  2. Step 2: Convert to fraction form
    28,427.10/42,640.65 = 19,095.90/x
  3. Step 3: Cross multiply
    28,427.10x = 42,640.65 × 19,095.90
  4. Step 4: Simplify right side
    28,427.10x = 814,261,588.34
  5. Step 5: Solve for x
    x = 814,261,588.34/28,427.10
  6. Step 6: Final answer
    x = 28,643.85

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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.