Home / 21,600.32-29,810.60-12,647.28

Finding the Fourth Proportional to 21,600.32, 29,810.60 and 12,647.28

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Solution

The fourth proportional to 21,600.32, 29,810.60 and 12,647.28 is: 17,454.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,600.32 : 29,810.60 = 12,647.28 : x
  2. Step 2: Convert to fraction form
    21,600.32/29,810.60 = 12,647.28/x
  3. Step 3: Cross multiply
    21,600.32x = 29,810.60 × 12,647.28
  4. Step 4: Simplify right side
    21,600.32x = 377,023,005.17
  5. Step 5: Solve for x
    x = 377,023,005.17/21,600.32
  6. Step 6: Final answer
    x = 17,454.51

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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.