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Finding the Fourth Proportional to 17,957.32, 26,940.06 and 5,478.46

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Solution

The fourth proportional to 17,957.32, 26,940.06 and 5,478.46 is: 8,218.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,957.32 : 26,940.06 = 5,478.46 : x
  2. Step 2: Convert to fraction form
    17,957.32/26,940.06 = 5,478.46/x
  3. Step 3: Cross multiply
    17,957.32x = 26,940.06 × 5,478.46
  4. Step 4: Simplify right side
    17,957.32x = 147,590,041.11
  5. Step 5: Solve for x
    x = 147,590,041.11/17,957.32
  6. Step 6: Final answer
    x = 8,218.93

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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.