Home / 42,893.40-64,346.31-13,313.61

Finding the Fourth Proportional to 42,893.40, 64,346.31 and 13,313.61

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Solution

The fourth proportional to 42,893.40, 64,346.31 and 13,313.61 is: 19,972.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,893.40 : 64,346.31 = 13,313.61 : x
  2. Step 2: Convert to fraction form
    42,893.40/64,346.31 = 13,313.61/x
  3. Step 3: Cross multiply
    42,893.40x = 64,346.31 × 13,313.61
  4. Step 4: Simplify right side
    42,893.40x = 856,681,676.28
  5. Step 5: Solve for x
    x = 856,681,676.28/42,893.40
  6. Step 6: Final answer
    x = 19,972.34

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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.