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Finding the Fourth Proportional to 28,392.16, 42,595.44 and 8,669.92

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Solution

The fourth proportional to 28,392.16, 42,595.44 and 8,669.92 is: 13,007.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,392.16 : 42,595.44 = 8,669.92 : x
  2. Step 2: Convert to fraction form
    28,392.16/42,595.44 = 8,669.92/x
  3. Step 3: Cross multiply
    28,392.16x = 42,595.44 × 8,669.92
  4. Step 4: Simplify right side
    28,392.16x = 369,299,057.16
  5. Step 5: Solve for x
    x = 369,299,057.16/28,392.16
  6. Step 6: Final answer
    x = 13,007.08

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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.