Home / 42,420.33-63,631.41-12,838.13

Finding the Fourth Proportional to 42,420.33, 63,631.41 and 12,838.13

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Solution

The fourth proportional to 42,420.33, 63,631.41 and 12,838.13 is: 19,257.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,420.33 : 63,631.41 = 12,838.13 : x
  2. Step 2: Convert to fraction form
    42,420.33/63,631.41 = 12,838.13/x
  3. Step 3: Cross multiply
    42,420.33x = 63,631.41 × 12,838.13
  4. Step 4: Simplify right side
    42,420.33x = 816,907,995.51
  5. Step 5: Solve for x
    x = 816,907,995.51/42,420.33
  6. Step 6: Final answer
    x = 19,257.46

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1.5x scale

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.