Home / 21,071.24-31,612.16-9,974.94

Finding the Fourth Proportional to 21,071.24, 31,612.16 and 9,974.94

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Solution

The fourth proportional to 21,071.24, 31,612.16 and 9,974.94 is: 14,964.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,071.24 : 31,612.16 = 9,974.94 : x
  2. Step 2: Convert to fraction form
    21,071.24/31,612.16 = 9,974.94/x
  3. Step 3: Cross multiply
    21,071.24x = 31,612.16 × 9,974.94
  4. Step 4: Simplify right side
    21,071.24x = 315,329,399.27
  5. Step 5: Solve for x
    x = 315,329,399.27/21,071.24
  6. Step 6: Final answer
    x = 14,964.92

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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.