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Finding the Fourth Proportional to 28,653.28, 42,980.48 and 9,933.92

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Solution

The fourth proportional to 28,653.28, 42,980.48 and 9,933.92 is: 14,901.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,653.28 : 42,980.48 = 9,933.92 : x
  2. Step 2: Convert to fraction form
    28,653.28/42,980.48 = 9,933.92/x
  3. Step 3: Cross multiply
    28,653.28x = 42,980.48 × 9,933.92
  4. Step 4: Simplify right side
    28,653.28x = 426,964,649.88
  5. Step 5: Solve for x
    x = 426,964,649.88/28,653.28
  6. Step 6: Final answer
    x = 14,901.07

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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.