Home / 21,365.60-29,490.26-12,291.99

Finding the Fourth Proportional to 21,365.60, 29,490.26 and 12,291.99

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Solution

The fourth proportional to 21,365.60, 29,490.26 and 12,291.99 is: 16,966.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,365.60 : 29,490.26 = 12,291.99 : x
  2. Step 2: Convert to fraction form
    21,365.60/29,490.26 = 12,291.99/x
  3. Step 3: Cross multiply
    21,365.60x = 29,490.26 × 12,291.99
  4. Step 4: Simplify right side
    21,365.60x = 362,494,122.34
  5. Step 5: Solve for x
    x = 362,494,122.34/21,365.60
  6. Step 6: Final answer
    x = 16,966.25

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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.