Home / 42,136.88-63,214.38-12,557.07

Finding the Fourth Proportional to 42,136.88, 63,214.38 and 12,557.07

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Solution

The fourth proportional to 42,136.88, 63,214.38 and 12,557.07 is: 18,838.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,136.88 : 63,214.38 = 12,557.07 : x
  2. Step 2: Convert to fraction form
    42,136.88/63,214.38 = 12,557.07/x
  3. Step 3: Cross multiply
    42,136.88x = 63,214.38 × 12,557.07
  4. Step 4: Simplify right side
    42,136.88x = 793,787,394.67
  5. Step 5: Solve for x
    x = 793,787,394.67/42,136.88
  6. Step 6: Final answer
    x = 18,838.31

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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.