Home / 21,289.42-31,937.98-8,802.66

Finding the Fourth Proportional to 21,289.42, 31,937.98 and 8,802.66

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Solution

The fourth proportional to 21,289.42, 31,937.98 and 8,802.66 is: 13,205.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.42 : 31,937.98 = 8,802.66 : x
  2. Step 2: Convert to fraction form
    21,289.42/31,937.98 = 8,802.66/x
  3. Step 3: Cross multiply
    21,289.42x = 31,937.98 × 8,802.66
  4. Step 4: Simplify right side
    21,289.42x = 281,139,179.03
  5. Step 5: Solve for x
    x = 281,139,179.03/21,289.42
  6. Step 6: Final answer
    x = 13,205.58

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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.