Home / 15,822.56-21,810-12,460.04

Finding the Fourth Proportional to 15,822.56, 21,810 and 12,460.04

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Solution

The fourth proportional to 15,822.56, 21,810 and 12,460.04 is: 17,175.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,822.56 : 21,810 = 12,460.04 : x
  2. Step 2: Convert to fraction form
    15,822.56/21,810 = 12,460.04/x
  3. Step 3: Cross multiply
    15,822.56x = 21,810 × 12,460.04
  4. Step 4: Simplify right side
    15,822.56x = 271,753,472.40
  5. Step 5: Solve for x
    x = 271,753,472.40/15,822.56
  6. Step 6: Final answer
    x = 17,175.06

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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.