Home / 28,563.64-42,789.66-19,677.40

Finding the Fourth Proportional to 28,563.64, 42,789.66 and 19,677.40

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Solution

The fourth proportional to 28,563.64, 42,789.66 and 19,677.40 is: 29,477.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,563.64 : 42,789.66 = 19,677.40 : x
  2. Step 2: Convert to fraction form
    28,563.64/42,789.66 = 19,677.40/x
  3. Step 3: Cross multiply
    28,563.64x = 42,789.66 × 19,677.40
  4. Step 4: Simplify right side
    28,563.64x = 841,989,255.68
  5. Step 5: Solve for x
    x = 841,989,255.68/28,563.64
  6. Step 6: Final answer
    x = 29,477.66

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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.