Home / 21,349.54-29,460.12-12,395.30

Finding the Fourth Proportional to 21,349.54, 29,460.12 and 12,395.30

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Solution

The fourth proportional to 21,349.54, 29,460.12 and 12,395.30 is: 17,104.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,349.54 : 29,460.12 = 12,395.30 : x
  2. Step 2: Convert to fraction form
    21,349.54/29,460.12 = 12,395.30/x
  3. Step 3: Cross multiply
    21,349.54x = 29,460.12 × 12,395.30
  4. Step 4: Simplify right side
    21,349.54x = 365,166,901.38
  5. Step 5: Solve for x
    x = 365,166,901.38/21,349.54
  6. Step 6: Final answer
    x = 17,104.20

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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.