Home / 21,305.18-29,400.58-12,230.28

Finding the Fourth Proportional to 21,305.18, 29,400.58 and 12,230.28

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Solution

The fourth proportional to 21,305.18, 29,400.58 and 12,230.28 is: 16,877.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.18 : 29,400.58 = 12,230.28 : x
  2. Step 2: Convert to fraction form
    21,305.18/29,400.58 = 12,230.28/x
  3. Step 3: Cross multiply
    21,305.18x = 29,400.58 × 12,230.28
  4. Step 4: Simplify right side
    21,305.18x = 359,577,294.99
  5. Step 5: Solve for x
    x = 359,577,294.99/21,305.18
  6. Step 6: Final answer
    x = 16,877.46

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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.