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Finding the Fourth Proportional to 28,601.84, 42,902.80 and 11,952.77

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Solution

The fourth proportional to 28,601.84, 42,902.80 and 11,952.77 is: 17,929.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,601.84 : 42,902.80 = 11,952.77 : x
  2. Step 2: Convert to fraction form
    28,601.84/42,902.80 = 11,952.77/x
  3. Step 3: Cross multiply
    28,601.84x = 42,902.80 × 11,952.77
  4. Step 4: Simplify right side
    28,601.84x = 512,807,056.36
  5. Step 5: Solve for x
    x = 512,807,056.36/28,601.84
  6. Step 6: Final answer
    x = 17,929.16

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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.