Home / 42,467.50-63,694.08-12,878.20

Finding the Fourth Proportional to 42,467.50, 63,694.08 and 12,878.20

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Solution

The fourth proportional to 42,467.50, 63,694.08 and 12,878.20 is: 19,315.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,467.50 : 63,694.08 = 12,878.20 : x
  2. Step 2: Convert to fraction form
    42,467.50/63,694.08 = 12,878.20/x
  3. Step 3: Cross multiply
    42,467.50x = 63,694.08 × 12,878.20
  4. Step 4: Simplify right side
    42,467.50x = 820,265,101.06
  5. Step 5: Solve for x
    x = 820,265,101.06/42,467.50
  6. Step 6: Final answer
    x = 19,315.13

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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.