Home / 21,328.98-29,424.45-12,371.28

Finding the Fourth Proportional to 21,328.98, 29,424.45 and 12,371.28

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Solution

The fourth proportional to 21,328.98, 29,424.45 and 12,371.28 is: 17,066.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.98 : 29,424.45 = 12,371.28 : x
  2. Step 2: Convert to fraction form
    21,328.98/29,424.45 = 12,371.28/x
  3. Step 3: Cross multiply
    21,328.98x = 29,424.45 × 12,371.28
  4. Step 4: Simplify right side
    21,328.98x = 364,018,109.80
  5. Step 5: Solve for x
    x = 364,018,109.80/21,328.98
  6. Step 6: Final answer
    x = 17,066.83

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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.