Home / 21,402.10-29,467.80-19,433.80

Finding the Fourth Proportional to 21,402.10, 29,467.80 and 19,433.80

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Solution

The fourth proportional to 21,402.10, 29,467.80 and 19,433.80 is: 26,757.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.10 : 29,467.80 = 19,433.80 : x
  2. Step 2: Convert to fraction form
    21,402.10/29,467.80 = 19,433.80/x
  3. Step 3: Cross multiply
    21,402.10x = 29,467.80 × 19,433.80
  4. Step 4: Simplify right side
    21,402.10x = 572,671,331.64
  5. Step 5: Solve for x
    x = 572,671,331.64/21,402.10
  6. Step 6: Final answer
    x = 26,757.72

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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.