Home / 21,287.20-32,090.22-19,859.98

Finding the Fourth Proportional to 21,287.20, 32,090.22 and 19,859.98

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Solution

The fourth proportional to 21,287.20, 32,090.22 and 19,859.98 is: 29,938.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287.20 : 32,090.22 = 19,859.98 : x
  2. Step 2: Convert to fraction form
    21,287.20/32,090.22 = 19,859.98/x
  3. Step 3: Cross multiply
    21,287.20x = 32,090.22 × 19,859.98
  4. Step 4: Simplify right side
    21,287.20x = 637,311,127.40
  5. Step 5: Solve for x
    x = 637,311,127.40/21,287.20
  6. Step 6: Final answer
    x = 29,938.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.