Home / 21,188.64-29,223.78-14,813.12

Finding the Fourth Proportional to 21,188.64, 29,223.78 and 14,813.12

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Solution

The fourth proportional to 21,188.64, 29,223.78 and 14,813.12 is: 20,430.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.64 : 29,223.78 = 14,813.12 : x
  2. Step 2: Convert to fraction form
    21,188.64/29,223.78 = 14,813.12/x
  3. Step 3: Cross multiply
    21,188.64x = 29,223.78 × 14,813.12
  4. Step 4: Simplify right side
    21,188.64x = 432,895,359.99
  5. Step 5: Solve for x
    x = 432,895,359.99/21,188.64
  6. Step 6: Final answer
    x = 20,430.54

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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.