Home / 21,026.40-29,017.80-12,076.80

Finding the Fourth Proportional to 21,026.40, 29,017.80 and 12,076.80

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Solution

The fourth proportional to 21,026.40, 29,017.80 and 12,076.80 is: 16,666.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.40 : 29,017.80 = 12,076.80 : x
  2. Step 2: Convert to fraction form
    21,026.40/29,017.80 = 12,076.80/x
  3. Step 3: Cross multiply
    21,026.40x = 29,017.80 × 12,076.80
  4. Step 4: Simplify right side
    21,026.40x = 350,442,167.04
  5. Step 5: Solve for x
    x = 350,442,167.04/21,026.40
  6. Step 6: Final answer
    x = 16,666.77

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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.