Home / 31,628.61-47,442.90-12,917.46

Finding the Fourth Proportional to 31,628.61, 47,442.90 and 12,917.46

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Solution

The fourth proportional to 31,628.61, 47,442.90 and 12,917.46 is: 19,376.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,628.61 : 47,442.90 = 12,917.46 : x
  2. Step 2: Convert to fraction form
    31,628.61/47,442.90 = 12,917.46/x
  3. Step 3: Cross multiply
    31,628.61x = 47,442.90 × 12,917.46
  4. Step 4: Simplify right side
    31,628.61x = 612,841,763.03
  5. Step 5: Solve for x
    x = 612,841,763.03/31,628.61
  6. Step 6: Final answer
    x = 19,376.18

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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.