Home / 42,699.96-64,049.94-13,129.29

Finding the Fourth Proportional to 42,699.96, 64,049.94 and 13,129.29

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Solution

The fourth proportional to 42,699.96, 64,049.94 and 13,129.29 is: 19,693.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,699.96 : 64,049.94 = 13,129.29 : x
  2. Step 2: Convert to fraction form
    42,699.96/64,049.94 = 13,129.29/x
  3. Step 3: Cross multiply
    42,699.96x = 64,049.94 × 13,129.29
  4. Step 4: Simplify right side
    42,699.96x = 840,930,236.74
  5. Step 5: Solve for x
    x = 840,930,236.74/42,699.96
  6. Step 6: Final answer
    x = 19,693.94

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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.