Home / 31,628.60-47,442.90-12,917.45

Finding the Fourth Proportional to 31,628.60, 47,442.90 and 12,917.45

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Solution

The fourth proportional to 31,628.60, 47,442.90 and 12,917.45 is: 19,376.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,628.60 : 47,442.90 = 12,917.45 : x
  2. Step 2: Convert to fraction form
    31,628.60/47,442.90 = 12,917.45/x
  3. Step 3: Cross multiply
    31,628.60x = 47,442.90 × 12,917.45
  4. Step 4: Simplify right side
    31,628.60x = 612,841,051.39
  5. Step 5: Solve for x
    x = 612,841,051.39/31,628.60
  6. Step 6: Final answer
    x = 19,376.17

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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.