Home / 28,575.57-42,870.15-11,926.35

Finding the Fourth Proportional to 28,575.57, 42,870.15 and 11,926.35

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Solution

The fourth proportional to 28,575.57, 42,870.15 and 11,926.35 is: 17,892.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,575.57 : 42,870.15 = 11,926.35 : x
  2. Step 2: Convert to fraction form
    28,575.57/42,870.15 = 11,926.35/x
  3. Step 3: Cross multiply
    28,575.57x = 42,870.15 × 11,926.35
  4. Step 4: Simplify right side
    28,575.57x = 511,284,413.45
  5. Step 5: Solve for x
    x = 511,284,413.45/28,575.57
  6. Step 6: Final answer
    x = 17,892.36

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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.