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Finding the Fourth Proportional to 54,768.63, 82,152.95 and 13,215.63

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Solution

The fourth proportional to 54,768.63, 82,152.95 and 13,215.63 is: 19,823.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,768.63 : 82,152.95 = 13,215.63 : x
  2. Step 2: Convert to fraction form
    54,768.63/82,152.95 = 13,215.63/x
  3. Step 3: Cross multiply
    54,768.63x = 82,152.95 × 13,215.63
  4. Step 4: Simplify right side
    54,768.63x = 1,085,702,990.61
  5. Step 5: Solve for x
    x = 1,085,702,990.61/54,768.63
  6. Step 6: Final answer
    x = 19,823.45

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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.