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Finding the Fourth Proportional to 20,710.30, 31,060.24 and 5,919.30

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Solution

The fourth proportional to 20,710.30, 31,060.24 and 5,919.30 is: 8,877.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.30 : 31,060.24 = 5,919.30 : x
  2. Step 2: Convert to fraction form
    20,710.30/31,060.24 = 5,919.30/x
  3. Step 3: Cross multiply
    20,710.30x = 31,060.24 × 5,919.30
  4. Step 4: Simplify right side
    20,710.30x = 183,854,878.63
  5. Step 5: Solve for x
    x = 183,854,878.63/20,710.30
  6. Step 6: Final answer
    x = 8,877.46

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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.