Home / 20,681.43-31,012.83-5,886.78

Finding the Fourth Proportional to 20,681.43, 31,012.83 and 5,886.78

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Solution

The fourth proportional to 20,681.43, 31,012.83 and 5,886.78 is: 8,827.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.43 : 31,012.83 = 5,886.78 : x
  2. Step 2: Convert to fraction form
    20,681.43/31,012.83 = 5,886.78/x
  3. Step 3: Cross multiply
    20,681.43x = 31,012.83 × 5,886.78
  4. Step 4: Simplify right side
    20,681.43x = 182,565,707.39
  5. Step 5: Solve for x
    x = 182,565,707.39/20,681.43
  6. Step 6: Final answer
    x = 8,827.52

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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.