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Finding the Fourth Proportional to 40,015.89, 59,975.89 and 18,639.79

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Solution

The fourth proportional to 40,015.89, 59,975.89 and 18,639.79 is: 27,937.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,015.89 : 59,975.89 = 18,639.79 : x
  2. Step 2: Convert to fraction form
    40,015.89/59,975.89 = 18,639.79/x
  3. Step 3: Cross multiply
    40,015.89x = 59,975.89 × 18,639.79
  4. Step 4: Simplify right side
    40,015.89x = 1,117,937,994.66
  5. Step 5: Solve for x
    x = 1,117,937,994.66/40,015.89
  6. Step 6: Final answer
    x = 27,937.35

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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.