Home / 21,350.29-29,463.40-11,918.85

Finding the Fourth Proportional to 21,350.29, 29,463.40 and 11,918.85

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Solution

The fourth proportional to 21,350.29, 29,463.40 and 11,918.85 is: 16,448.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,350.29 : 29,463.40 = 11,918.85 : x
  2. Step 2: Convert to fraction form
    21,350.29/29,463.40 = 11,918.85/x
  3. Step 3: Cross multiply
    21,350.29x = 29,463.40 × 11,918.85
  4. Step 4: Simplify right side
    21,350.29x = 351,169,848.19
  5. Step 5: Solve for x
    x = 351,169,848.19/21,350.29
  6. Step 6: Final answer
    x = 16,448.01

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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.