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Finding the Fourth Proportional to 21,059.96, 31,595.95 and 7,029.18

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Solution

The fourth proportional to 21,059.96, 31,595.95 and 7,029.18 is: 10,545.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,059.96 : 31,595.95 = 7,029.18 : x
  2. Step 2: Convert to fraction form
    21,059.96/31,595.95 = 7,029.18/x
  3. Step 3: Cross multiply
    21,059.96x = 31,595.95 × 7,029.18
  4. Step 4: Simplify right side
    21,059.96x = 222,093,602.25
  5. Step 5: Solve for x
    x = 222,093,602.25/21,059.96
  6. Step 6: Final answer
    x = 10,545.77

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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.