Home / 28,409.60-42,612.96-7,633.28

Finding the Fourth Proportional to 28,409.60, 42,612.96 and 7,633.28

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Solution

The fourth proportional to 28,409.60, 42,612.96 and 7,633.28 is: 11,449.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,409.60 : 42,612.96 = 7,633.28 : x
  2. Step 2: Convert to fraction form
    28,409.60/42,612.96 = 7,633.28/x
  3. Step 3: Cross multiply
    28,409.60x = 42,612.96 × 7,633.28
  4. Step 4: Simplify right side
    28,409.60x = 325,276,655.31
  5. Step 5: Solve for x
    x = 325,276,655.31/28,409.60
  6. Step 6: Final answer
    x = 11,449.53

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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.