Home / 21,386.60-29,513.45-11,696.06

Finding the Fourth Proportional to 21,386.60, 29,513.45 and 11,696.06

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Solution

The fourth proportional to 21,386.60, 29,513.45 and 11,696.06 is: 16,140.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,386.60 : 29,513.45 = 11,696.06 : x
  2. Step 2: Convert to fraction form
    21,386.60/29,513.45 = 11,696.06/x
  3. Step 3: Cross multiply
    21,386.60x = 29,513.45 × 11,696.06
  4. Step 4: Simplify right side
    21,386.60x = 345,190,875.96
  5. Step 5: Solve for x
    x = 345,190,875.96/21,386.60
  6. Step 6: Final answer
    x = 16,140.53

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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.