Home / 21,443.52-29,607.48-13,900.80

Finding the Fourth Proportional to 21,443.52, 29,607.48 and 13,900.80

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Solution

The fourth proportional to 21,443.52, 29,607.48 and 13,900.80 is: 19,193.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,443.52 : 29,607.48 = 13,900.80 : x
  2. Step 2: Convert to fraction form
    21,443.52/29,607.48 = 13,900.80/x
  3. Step 3: Cross multiply
    21,443.52x = 29,607.48 × 13,900.80
  4. Step 4: Simplify right side
    21,443.52x = 411,567,657.98
  5. Step 5: Solve for x
    x = 411,567,657.98/21,443.52
  6. Step 6: Final answer
    x = 19,193.10

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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.