Home / 42,639.09-63,958.79-13,056.80

Finding the Fourth Proportional to 42,639.09, 63,958.79 and 13,056.80

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Solution

The fourth proportional to 42,639.09, 63,958.79 and 13,056.80 is: 19,585.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,639.09 : 63,958.79 = 13,056.80 : x
  2. Step 2: Convert to fraction form
    42,639.09/63,958.79 = 13,056.80/x
  3. Step 3: Cross multiply
    42,639.09x = 63,958.79 × 13,056.80
  4. Step 4: Simplify right side
    42,639.09x = 835,096,744.19
  5. Step 5: Solve for x
    x = 835,096,744.19/42,639.09
  6. Step 6: Final answer
    x = 19,585.24

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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.