Home / 19,981.23-29,985.21-8,294.43

Finding the Fourth Proportional to 19,981.23, 29,985.21 and 8,294.43

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Solution

The fourth proportional to 19,981.23, 29,985.21 and 8,294.43 is: 12,447.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.23 : 29,985.21 = 8,294.43 : x
  2. Step 2: Convert to fraction form
    19,981.23/29,985.21 = 8,294.43/x
  3. Step 3: Cross multiply
    19,981.23x = 29,985.21 × 8,294.43
  4. Step 4: Simplify right side
    19,981.23x = 248,710,225.38
  5. Step 5: Solve for x
    x = 248,710,225.38/19,981.23
  6. Step 6: Final answer
    x = 12,447.19

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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.