Home / 42,435.09-63,664.48-12,853.18

Finding the Fourth Proportional to 42,435.09, 63,664.48 and 12,853.18

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Solution

The fourth proportional to 42,435.09, 63,664.48 and 12,853.18 is: 19,283.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,435.09 : 63,664.48 = 12,853.18 : x
  2. Step 2: Convert to fraction form
    42,435.09/63,664.48 = 12,853.18/x
  3. Step 3: Cross multiply
    42,435.09x = 63,664.48 × 12,853.18
  4. Step 4: Simplify right side
    42,435.09x = 818,291,116.69
  5. Step 5: Solve for x
    x = 818,291,116.69/42,435.09
  6. Step 6: Final answer
    x = 19,283.36

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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.