Home / 28,860.64-43,289.60-9,140.32

Finding the Fourth Proportional to 28,860.64, 43,289.60 and 9,140.32

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Solution

The fourth proportional to 28,860.64, 43,289.60 and 9,140.32 is: 13,710.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,860.64 : 43,289.60 = 9,140.32 : x
  2. Step 2: Convert to fraction form
    28,860.64/43,289.60 = 9,140.32/x
  3. Step 3: Cross multiply
    28,860.64x = 43,289.60 × 9,140.32
  4. Step 4: Simplify right side
    28,860.64x = 395,680,796.67
  5. Step 5: Solve for x
    x = 395,680,796.67/28,860.64
  6. Step 6: Final answer
    x = 13,710.05

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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.