Home / 21,610.02-29,820.93-12,178.62

Finding the Fourth Proportional to 21,610.02, 29,820.93 and 12,178.62

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Solution

The fourth proportional to 21,610.02, 29,820.93 and 12,178.62 is: 16,805.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,610.02 : 29,820.93 = 12,178.62 : x
  2. Step 2: Convert to fraction form
    21,610.02/29,820.93 = 12,178.62/x
  3. Step 3: Cross multiply
    21,610.02x = 29,820.93 × 12,178.62
  4. Step 4: Simplify right side
    21,610.02x = 363,177,774.52
  5. Step 5: Solve for x
    x = 363,177,774.52/21,610.02
  6. Step 6: Final answer
    x = 16,805.99

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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.