Home / 21,117.60-31,682.16-7,079.94

Finding the Fourth Proportional to 21,117.60, 31,682.16 and 7,079.94

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Solution

The fourth proportional to 21,117.60, 31,682.16 and 7,079.94 is: 10,621.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.60 : 31,682.16 = 7,079.94 : x
  2. Step 2: Convert to fraction form
    21,117.60/31,682.16 = 7,079.94/x
  3. Step 3: Cross multiply
    21,117.60x = 31,682.16 × 7,079.94
  4. Step 4: Simplify right side
    21,117.60x = 224,307,791.87
  5. Step 5: Solve for x
    x = 224,307,791.87/21,117.60
  6. Step 6: Final answer
    x = 10,621.84

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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.