Home / 21,931.76-32,930.58-12,582.38

Finding the Fourth Proportional to 21,931.76, 32,930.58 and 12,582.38

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Solution

The fourth proportional to 21,931.76, 32,930.58 and 12,582.38 is: 18,892.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.76 : 32,930.58 = 12,582.38 : x
  2. Step 2: Convert to fraction form
    21,931.76/32,930.58 = 12,582.38/x
  3. Step 3: Cross multiply
    21,931.76x = 32,930.58 × 12,582.38
  4. Step 4: Simplify right side
    21,931.76x = 414,345,071.18
  5. Step 5: Solve for x
    x = 414,345,071.18/21,931.76
  6. Step 6: Final answer
    x = 18,892.47

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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.