Home / 21,122.34-31,672.76-7,077.32

Finding the Fourth Proportional to 21,122.34, 31,672.76 and 7,077.32

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Solution

The fourth proportional to 21,122.34, 31,672.76 and 7,077.32 is: 10,612.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122.34 : 31,672.76 = 7,077.32 : x
  2. Step 2: Convert to fraction form
    21,122.34/31,672.76 = 7,077.32/x
  3. Step 3: Cross multiply
    21,122.34x = 31,672.76 × 7,077.32
  4. Step 4: Simplify right side
    21,122.34x = 224,158,257.80
  5. Step 5: Solve for x
    x = 224,158,257.80/21,122.34
  6. Step 6: Final answer
    x = 10,612.38

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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.