Home / 28,560.55-39,413.56-15,985.30

Finding the Fourth Proportional to 28,560.55, 39,413.56 and 15,985.30

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Solution

The fourth proportional to 28,560.55, 39,413.56 and 15,985.30 is: 22,059.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.55 : 39,413.56 = 15,985.30 : x
  2. Step 2: Convert to fraction form
    28,560.55/39,413.56 = 15,985.30/x
  3. Step 3: Cross multiply
    28,560.55x = 39,413.56 × 15,985.30
  4. Step 4: Simplify right side
    28,560.55x = 630,037,580.67
  5. Step 5: Solve for x
    x = 630,037,580.67/28,560.55
  6. Step 6: Final answer
    x = 22,059.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.