Home / 28,585.50-42,870.51-11,942.05

Finding the Fourth Proportional to 28,585.50, 42,870.51 and 11,942.05

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Solution

The fourth proportional to 28,585.50, 42,870.51 and 11,942.05 is: 17,909.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,585.50 : 42,870.51 = 11,942.05 : x
  2. Step 2: Convert to fraction form
    28,585.50/42,870.51 = 11,942.05/x
  3. Step 3: Cross multiply
    28,585.50x = 42,870.51 × 11,942.05
  4. Step 4: Simplify right side
    28,585.50x = 511,961,714.24
  5. Step 5: Solve for x
    x = 511,961,714.24/28,585.50
  6. Step 6: Final answer
    x = 17,909.84

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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.