Home / 21,573.28-29,765.31-12,622.99

Finding the Fourth Proportional to 21,573.28, 29,765.31 and 12,622.99

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Solution

The fourth proportional to 21,573.28, 29,765.31 and 12,622.99 is: 17,416.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,573.28 : 29,765.31 = 12,622.99 : x
  2. Step 2: Convert to fraction form
    21,573.28/29,765.31 = 12,622.99/x
  3. Step 3: Cross multiply
    21,573.28x = 29,765.31 × 12,622.99
  4. Step 4: Simplify right side
    21,573.28x = 375,727,210.48
  5. Step 5: Solve for x
    x = 375,727,210.48/21,573.28
  6. Step 6: Final answer
    x = 17,416.32

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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.