Home / 18,780.12-25,913.52-10,395

Finding the Fourth Proportional to 18,780.12, 25,913.52 and 10,395

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Solution

The fourth proportional to 18,780.12, 25,913.52 and 10,395 is: 14,343.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.12 : 25,913.52 = 10,395 : x
  2. Step 2: Convert to fraction form
    18,780.12/25,913.52 = 10,395/x
  3. Step 3: Cross multiply
    18,780.12x = 25,913.52 × 10,395
  4. Step 4: Simplify right side
    18,780.12x = 269,371,040.40
  5. Step 5: Solve for x
    x = 269,371,040.40/18,780.12
  6. Step 6: Final answer
    x = 14,343.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.