Home / 21,030.41-29,018.34-12,531.48

Finding the Fourth Proportional to 21,030.41, 29,018.34 and 12,531.48

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Solution

The fourth proportional to 21,030.41, 29,018.34 and 12,531.48 is: 17,291.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.41 : 29,018.34 = 12,531.48 : x
  2. Step 2: Convert to fraction form
    21,030.41/29,018.34 = 12,531.48/x
  3. Step 3: Cross multiply
    21,030.41x = 29,018.34 × 12,531.48
  4. Step 4: Simplify right side
    21,030.41x = 363,642,747.34
  5. Step 5: Solve for x
    x = 363,642,747.34/21,030.41
  6. Step 6: Final answer
    x = 17,291.29

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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.