Home / 28,518.40-42,777.60-25,699.60

Finding the Fourth Proportional to 28,518.40, 42,777.60 and 25,699.60

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Solution

The fourth proportional to 28,518.40, 42,777.60 and 25,699.60 is: 38,549.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,518.40 : 42,777.60 = 25,699.60 : x
  2. Step 2: Convert to fraction form
    28,518.40/42,777.60 = 25,699.60/x
  3. Step 3: Cross multiply
    28,518.40x = 42,777.60 × 25,699.60
  4. Step 4: Simplify right side
    28,518.40x = 1,099,367,208.96
  5. Step 5: Solve for x
    x = 1,099,367,208.96/28,518.40
  6. Step 6: Final answer
    x = 38,549.40

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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.