Home / 21,312.63-31,979.94-9,474.57

Finding the Fourth Proportional to 21,312.63, 31,979.94 and 9,474.57

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Solution

The fourth proportional to 21,312.63, 31,979.94 and 9,474.57 is: 14,216.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.63 : 31,979.94 = 9,474.57 : x
  2. Step 2: Convert to fraction form
    21,312.63/31,979.94 = 9,474.57/x
  3. Step 3: Cross multiply
    21,312.63x = 31,979.94 × 9,474.57
  4. Step 4: Simplify right side
    21,312.63x = 302,996,180.13
  5. Step 5: Solve for x
    x = 302,996,180.13/21,312.63
  6. Step 6: Final answer
    x = 14,216.74

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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.