Home / 31,368.86-47,067.12-12,685.38

Finding the Fourth Proportional to 31,368.86, 47,067.12 and 12,685.38

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Solution

The fourth proportional to 31,368.86, 47,067.12 and 12,685.38 is: 19,033.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,368.86 : 47,067.12 = 12,685.38 : x
  2. Step 2: Convert to fraction form
    31,368.86/47,067.12 = 12,685.38/x
  3. Step 3: Cross multiply
    31,368.86x = 47,067.12 × 12,685.38
  4. Step 4: Simplify right side
    31,368.86x = 597,064,302.71
  5. Step 5: Solve for x
    x = 597,064,302.71/31,368.86
  6. Step 6: Final answer
    x = 19,033.67

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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.