Home / 42,420.30-63,637.65-12,837.90

Finding the Fourth Proportional to 42,420.30, 63,637.65 and 12,837.90

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Solution

The fourth proportional to 42,420.30, 63,637.65 and 12,837.90 is: 19,259.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,420.30 : 63,637.65 = 12,837.90 : x
  2. Step 2: Convert to fraction form
    42,420.30/63,637.65 = 12,837.90/x
  3. Step 3: Cross multiply
    42,420.30x = 63,637.65 × 12,837.90
  4. Step 4: Simplify right side
    42,420.30x = 816,973,786.94
  5. Step 5: Solve for x
    x = 816,973,786.94/42,420.30
  6. Step 6: Final answer
    x = 19,259.03

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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.