Home / 21,184.22-31,737.59-9,918.89

Finding the Fourth Proportional to 21,184.22, 31,737.59 and 9,918.89

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Solution

The fourth proportional to 21,184.22, 31,737.59 and 9,918.89 is: 14,860.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.22 : 31,737.59 = 9,918.89 : x
  2. Step 2: Convert to fraction form
    21,184.22/31,737.59 = 9,918.89/x
  3. Step 3: Cross multiply
    21,184.22x = 31,737.59 × 9,918.89
  4. Step 4: Simplify right side
    21,184.22x = 314,801,649.20
  5. Step 5: Solve for x
    x = 314,801,649.20/21,184.22
  6. Step 6: Final answer
    x = 14,860.20

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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.