Home / 20,718.02-31,079.74-7,576.58

Finding the Fourth Proportional to 20,718.02, 31,079.74 and 7,576.58

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Solution

The fourth proportional to 20,718.02, 31,079.74 and 7,576.58 is: 11,365.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.02 : 31,079.74 = 7,576.58 : x
  2. Step 2: Convert to fraction form
    20,718.02/31,079.74 = 7,576.58/x
  3. Step 3: Cross multiply
    20,718.02x = 31,079.74 × 7,576.58
  4. Step 4: Simplify right side
    20,718.02x = 235,478,136.49
  5. Step 5: Solve for x
    x = 235,478,136.49/20,718.02
  6. Step 6: Final answer
    x = 11,365.86

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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.