Home / 21,167.72-31,751.58-7,309.16

Finding the Fourth Proportional to 21,167.72, 31,751.58 and 7,309.16

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Solution

The fourth proportional to 21,167.72, 31,751.58 and 7,309.16 is: 10,963.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.72 : 31,751.58 = 7,309.16 : x
  2. Step 2: Convert to fraction form
    21,167.72/31,751.58 = 7,309.16/x
  3. Step 3: Cross multiply
    21,167.72x = 31,751.58 × 7,309.16
  4. Step 4: Simplify right side
    21,167.72x = 232,077,378.47
  5. Step 5: Solve for x
    x = 232,077,378.47/21,167.72
  6. Step 6: Final answer
    x = 10,963.74

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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.