Home / 21,431.01-29,574.14-11,870.52

Finding the Fourth Proportional to 21,431.01, 29,574.14 and 11,870.52

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Solution

The fourth proportional to 21,431.01, 29,574.14 and 11,870.52 is: 16,380.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.01 : 29,574.14 = 11,870.52 : x
  2. Step 2: Convert to fraction form
    21,431.01/29,574.14 = 11,870.52/x
  3. Step 3: Cross multiply
    21,431.01x = 29,574.14 × 11,870.52
  4. Step 4: Simplify right side
    21,431.01x = 351,060,450.03
  5. Step 5: Solve for x
    x = 351,060,450.03/21,431.01
  6. Step 6: Final answer
    x = 16,380.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.