Home / 42,442.80-63,680.58-12,860.88

Finding the Fourth Proportional to 42,442.80, 63,680.58 and 12,860.88

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Solution

The fourth proportional to 42,442.80, 63,680.58 and 12,860.88 is: 19,296.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,442.80 : 63,680.58 = 12,860.88 : x
  2. Step 2: Convert to fraction form
    42,442.80/63,680.58 = 12,860.88/x
  3. Step 3: Cross multiply
    42,442.80x = 63,680.58 × 12,860.88
  4. Step 4: Simplify right side
    42,442.80x = 818,988,297.71
  5. Step 5: Solve for x
    x = 818,988,297.71/42,442.80
  6. Step 6: Final answer
    x = 19,296.28

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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.