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Finding the Fourth Proportional to 28,483.35, 42,721.26 and 7,424.93

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Solution

The fourth proportional to 28,483.35, 42,721.26 and 7,424.93 is: 11,136.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,483.35 : 42,721.26 = 7,424.93 : x
  2. Step 2: Convert to fraction form
    28,483.35/42,721.26 = 7,424.93/x
  3. Step 3: Cross multiply
    28,483.35x = 42,721.26 × 7,424.93
  4. Step 4: Simplify right side
    28,483.35x = 317,202,151.41
  5. Step 5: Solve for x
    x = 317,202,151.41/28,483.35
  6. Step 6: Final answer
    x = 11,136.41

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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.