Home / 21,666.30-29,897.73-12,712.56

Finding the Fourth Proportional to 21,666.30, 29,897.73 and 12,712.56

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Solution

The fourth proportional to 21,666.30, 29,897.73 and 12,712.56 is: 17,542.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,666.30 : 29,897.73 = 12,712.56 : x
  2. Step 2: Convert to fraction form
    21,666.30/29,897.73 = 12,712.56/x
  3. Step 3: Cross multiply
    21,666.30x = 29,897.73 × 12,712.56
  4. Step 4: Simplify right side
    21,666.30x = 380,076,686.49
  5. Step 5: Solve for x
    x = 380,076,686.49/21,666.30
  6. Step 6: Final answer
    x = 17,542.30

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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.