Home / 42,621.40-63,929.79-13,039.24

Finding the Fourth Proportional to 42,621.40, 63,929.79 and 13,039.24

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Solution

The fourth proportional to 42,621.40, 63,929.79 and 13,039.24 is: 19,558.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,621.40 : 63,929.79 = 13,039.24 : x
  2. Step 2: Convert to fraction form
    42,621.40/63,929.79 = 13,039.24/x
  3. Step 3: Cross multiply
    42,621.40x = 63,929.79 × 13,039.24
  4. Step 4: Simplify right side
    42,621.40x = 833,595,874.96
  5. Step 5: Solve for x
    x = 833,595,874.96/42,621.40
  6. Step 6: Final answer
    x = 19,558.15

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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.