Home / 21,326.21-29,420.65-12,368.52

Finding the Fourth Proportional to 21,326.21, 29,420.65 and 12,368.52

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Solution

The fourth proportional to 21,326.21, 29,420.65 and 12,368.52 is: 17,063.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.21 : 29,420.65 = 12,368.52 : x
  2. Step 2: Convert to fraction form
    21,326.21/29,420.65 = 12,368.52/x
  3. Step 3: Cross multiply
    21,326.21x = 29,420.65 × 12,368.52
  4. Step 4: Simplify right side
    21,326.21x = 363,889,897.94
  5. Step 5: Solve for x
    x = 363,889,897.94/21,326.21
  6. Step 6: Final answer
    x = 17,063.04

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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.