Home / 42,636.06-63,943.18-12,643.28

Finding the Fourth Proportional to 42,636.06, 63,943.18 and 12,643.28

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Solution

The fourth proportional to 42,636.06, 63,943.18 and 12,643.28 is: 18,961.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,636.06 : 63,943.18 = 12,643.28 : x
  2. Step 2: Convert to fraction form
    42,636.06/63,943.18 = 12,643.28/x
  3. Step 3: Cross multiply
    42,636.06x = 63,943.18 × 12,643.28
  4. Step 4: Simplify right side
    42,636.06x = 808,451,528.83
  5. Step 5: Solve for x
    x = 808,451,528.83/42,636.06
  6. Step 6: Final answer
    x = 18,961.68

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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.