Home / 21,346.64-29,458.29-11,915.12

Finding the Fourth Proportional to 21,346.64, 29,458.29 and 11,915.12

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Solution

The fourth proportional to 21,346.64, 29,458.29 and 11,915.12 is: 16,442.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,346.64 : 29,458.29 = 11,915.12 : x
  2. Step 2: Convert to fraction form
    21,346.64/29,458.29 = 11,915.12/x
  3. Step 3: Cross multiply
    21,346.64x = 29,458.29 × 11,915.12
  4. Step 4: Simplify right side
    21,346.64x = 350,999,060.34
  5. Step 5: Solve for x
    x = 350,999,060.34/21,346.64
  6. Step 6: Final answer
    x = 16,442.82

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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.