Home / 42,356-63,521.20-12,771.36

Finding the Fourth Proportional to 42,356, 63,521.20 and 12,771.36

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Solution

The fourth proportional to 42,356, 63,521.20 and 12,771.36 is: 19,153.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,356 : 63,521.20 = 12,771.36 : x
  2. Step 2: Convert to fraction form
    42,356/63,521.20 = 12,771.36/x
  3. Step 3: Cross multiply
    42,356x = 63,521.20 × 12,771.36
  4. Step 4: Simplify right side
    42,356x = 811,252,112.83
  5. Step 5: Solve for x
    x = 811,252,112.83/42,356
  6. Step 6: Final answer
    x = 19,153.18

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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.