Home / 15,900.30-21,933.18-13,394.16

Finding the Fourth Proportional to 15,900.30, 21,933.18 and 13,394.16

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Solution

The fourth proportional to 15,900.30, 21,933.18 and 13,394.16 is: 18,476.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,900.30 : 21,933.18 = 13,394.16 : x
  2. Step 2: Convert to fraction form
    15,900.30/21,933.18 = 13,394.16/x
  3. Step 3: Cross multiply
    15,900.30x = 21,933.18 × 13,394.16
  4. Step 4: Simplify right side
    15,900.30x = 293,776,522.23
  5. Step 5: Solve for x
    x = 293,776,522.23/15,900.30
  6. Step 6: Final answer
    x = 18,476.16

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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.