Home / 31,629.60-47,444.40-12,918.45

Finding the Fourth Proportional to 31,629.60, 47,444.40 and 12,918.45

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Solution

The fourth proportional to 31,629.60, 47,444.40 and 12,918.45 is: 19,377.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,629.60 : 47,444.40 = 12,918.45 : x
  2. Step 2: Convert to fraction form
    31,629.60/47,444.40 = 12,918.45/x
  3. Step 3: Cross multiply
    31,629.60x = 47,444.40 × 12,918.45
  4. Step 4: Simplify right side
    31,629.60x = 612,908,109.18
  5. Step 5: Solve for x
    x = 612,908,109.18/31,629.60
  6. Step 6: Final answer
    x = 19,377.68

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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.