Home / 21,393.02-29,523.51-12,897.87

Finding the Fourth Proportional to 21,393.02, 29,523.51 and 12,897.87

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Solution

The fourth proportional to 21,393.02, 29,523.51 and 12,897.87 is: 17,799.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,393.02 : 29,523.51 = 12,897.87 : x
  2. Step 2: Convert to fraction form
    21,393.02/29,523.51 = 12,897.87/x
  3. Step 3: Cross multiply
    21,393.02x = 29,523.51 × 12,897.87
  4. Step 4: Simplify right side
    21,393.02x = 380,790,393.92
  5. Step 5: Solve for x
    x = 380,790,393.92/21,393.02
  6. Step 6: Final answer
    x = 17,799.75

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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.