Home / 42,621.76-63,930.33-13,039.60

Finding the Fourth Proportional to 42,621.76, 63,930.33 and 13,039.60

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Solution

The fourth proportional to 42,621.76, 63,930.33 and 13,039.60 is: 19,558.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,621.76 : 63,930.33 = 13,039.60 : x
  2. Step 2: Convert to fraction form
    42,621.76/63,930.33 = 13,039.60/x
  3. Step 3: Cross multiply
    42,621.76x = 63,930.33 × 13,039.60
  4. Step 4: Simplify right side
    42,621.76x = 833,625,931.07
  5. Step 5: Solve for x
    x = 833,625,931.07/42,621.76
  6. Step 6: Final answer
    x = 19,558.69

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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.