Home / 18,931.79-28,387.71-10,052.12

Finding the Fourth Proportional to 18,931.79, 28,387.71 and 10,052.12

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Solution

The fourth proportional to 18,931.79, 28,387.71 and 10,052.12 is: 15,072.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931.79 : 28,387.71 = 10,052.12 : x
  2. Step 2: Convert to fraction form
    18,931.79/28,387.71 = 10,052.12/x
  3. Step 3: Cross multiply
    18,931.79x = 28,387.71 × 10,052.12
  4. Step 4: Simplify right side
    18,931.79x = 285,356,525.51
  5. Step 5: Solve for x
    x = 285,356,525.51/18,931.79
  6. Step 6: Final answer
    x = 15,072.88

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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.