Home / 21,349.40-29,460.95-11,918.56

Finding the Fourth Proportional to 21,349.40, 29,460.95 and 11,918.56

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Solution

The fourth proportional to 21,349.40, 29,460.95 and 11,918.56 is: 16,446.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,349.40 : 29,460.95 = 11,918.56 : x
  2. Step 2: Convert to fraction form
    21,349.40/29,460.95 = 11,918.56/x
  3. Step 3: Cross multiply
    21,349.40x = 29,460.95 × 11,918.56
  4. Step 4: Simplify right side
    21,349.40x = 351,132,100.23
  5. Step 5: Solve for x
    x = 351,132,100.23/21,349.40
  6. Step 6: Final answer
    x = 16,446.93

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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.