Home / 31,907.60-47,845.68-11,916.28

Finding the Fourth Proportional to 31,907.60, 47,845.68 and 11,916.28

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Solution

The fourth proportional to 31,907.60, 47,845.68 and 11,916.28 is: 17,868.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,907.60 : 47,845.68 = 11,916.28 : x
  2. Step 2: Convert to fraction form
    31,907.60/47,845.68 = 11,916.28/x
  3. Step 3: Cross multiply
    31,907.60x = 47,845.68 × 11,916.28
  4. Step 4: Simplify right side
    31,907.60x = 570,142,519.67
  5. Step 5: Solve for x
    x = 570,142,519.67/31,907.60
  6. Step 6: Final answer
    x = 17,868.55

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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.