Home / 31,698.78-47,554.65-10,919.58

Finding the Fourth Proportional to 31,698.78, 47,554.65 and 10,919.58

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Solution

The fourth proportional to 31,698.78, 47,554.65 and 10,919.58 is: 16,381.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,698.78 : 47,554.65 = 10,919.58 : x
  2. Step 2: Convert to fraction form
    31,698.78/47,554.65 = 10,919.58/x
  3. Step 3: Cross multiply
    31,698.78x = 47,554.65 × 10,919.58
  4. Step 4: Simplify right side
    31,698.78x = 519,276,805.05
  5. Step 5: Solve for x
    x = 519,276,805.05/31,698.78
  6. Step 6: Final answer
    x = 16,381.60

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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.