Home / 21,403.10-29,469.18-19,434.80

Finding the Fourth Proportional to 21,403.10, 29,469.18 and 19,434.80

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Solution

The fourth proportional to 21,403.10, 29,469.18 and 19,434.80 is: 26,759.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,403.10 : 29,469.18 = 19,434.80 : x
  2. Step 2: Convert to fraction form
    21,403.10/29,469.18 = 19,434.80/x
  3. Step 3: Cross multiply
    21,403.10x = 29,469.18 × 19,434.80
  4. Step 4: Simplify right side
    21,403.10x = 572,727,619.46
  5. Step 5: Solve for x
    x = 572,727,619.46/21,403.10
  6. Step 6: Final answer
    x = 26,759.10

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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.