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Finding the Fourth Proportional to 28,644.92, 42,970.35 and 9,924.92

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Solution

The fourth proportional to 28,644.92, 42,970.35 and 9,924.92 is: 14,888.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,644.92 : 42,970.35 = 9,924.92 : x
  2. Step 2: Convert to fraction form
    28,644.92/42,970.35 = 9,924.92/x
  3. Step 3: Cross multiply
    28,644.92x = 42,970.35 × 9,924.92
  4. Step 4: Simplify right side
    28,644.92x = 426,477,286.12
  5. Step 5: Solve for x
    x = 426,477,286.12/28,644.92
  6. Step 6: Final answer
    x = 14,888.41

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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.