Home / 21,297.16-31,897.14-18,173.80

Finding the Fourth Proportional to 21,297.16, 31,897.14 and 18,173.80

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Solution

The fourth proportional to 21,297.16, 31,897.14 and 18,173.80 is: 27,219.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,297.16 : 31,897.14 = 18,173.80 : x
  2. Step 2: Convert to fraction form
    21,297.16/31,897.14 = 18,173.80/x
  3. Step 3: Cross multiply
    21,297.16x = 31,897.14 × 18,173.80
  4. Step 4: Simplify right side
    21,297.16x = 579,692,242.93
  5. Step 5: Solve for x
    x = 579,692,242.93/21,297.16
  6. Step 6: Final answer
    x = 27,219.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.