Home / 31,629.81-47,431.66-12,897.15

Finding the Fourth Proportional to 31,629.81, 47,431.66 and 12,897.15

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Solution

The fourth proportional to 31,629.81, 47,431.66 and 12,897.15 is: 19,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,629.81 : 47,431.66 = 12,897.15 : x
  2. Step 2: Convert to fraction form
    31,629.81/47,431.66 = 12,897.15/x
  3. Step 3: Cross multiply
    31,629.81x = 47,431.66 × 12,897.15
  4. Step 4: Simplify right side
    31,629.81x = 611,733,233.77
  5. Step 5: Solve for x
    x = 611,733,233.77/31,629.81
  6. Step 6: Final answer
    x = 19,340.40

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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.