Home / 31,628.95-47,406.36-12,897.29

Finding the Fourth Proportional to 31,628.95, 47,406.36 and 12,897.29

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Solution

The fourth proportional to 31,628.95, 47,406.36 and 12,897.29 is: 19,330.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,628.95 : 47,406.36 = 12,897.29 : x
  2. Step 2: Convert to fraction form
    31,628.95/47,406.36 = 12,897.29/x
  3. Step 3: Cross multiply
    31,628.95x = 47,406.36 × 12,897.29
  4. Step 4: Simplify right side
    31,628.95x = 611,413,739.65
  5. Step 5: Solve for x
    x = 611,413,739.65/31,628.95
  6. Step 6: Final answer
    x = 19,330.83

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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.