Home / 21,017.41-29,000.42-12,518.48

Finding the Fourth Proportional to 21,017.41, 29,000.42 and 12,518.48

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Solution

The fourth proportional to 21,017.41, 29,000.42 and 12,518.48 is: 17,273.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.41 : 29,000.42 = 12,518.48 : x
  2. Step 2: Convert to fraction form
    21,017.41/29,000.42 = 12,518.48/x
  3. Step 3: Cross multiply
    21,017.41x = 29,000.42 × 12,518.48
  4. Step 4: Simplify right side
    21,017.41x = 363,041,115.17
  5. Step 5: Solve for x
    x = 363,041,115.17/21,017.41
  6. Step 6: Final answer
    x = 17,273.36

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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.