Home / 21,005.46-31,505.40-6,215.94

Finding the Fourth Proportional to 21,005.46, 31,505.40 and 6,215.94

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Solution

The fourth proportional to 21,005.46, 31,505.40 and 6,215.94 is: 9,323.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005.46 : 31,505.40 = 6,215.94 : x
  2. Step 2: Convert to fraction form
    21,005.46/31,505.40 = 6,215.94/x
  3. Step 3: Cross multiply
    21,005.46x = 31,505.40 × 6,215.94
  4. Step 4: Simplify right side
    21,005.46x = 195,835,676.08
  5. Step 5: Solve for x
    x = 195,835,676.08/21,005.46
  6. Step 6: Final answer
    x = 9,323.08

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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.