Home / 47,215.84-70,815.84-13,935.28

Finding the Fourth Proportional to 47,215.84, 70,815.84 and 13,935.28

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Solution

The fourth proportional to 47,215.84, 70,815.84 and 13,935.28 is: 20,900.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,215.84 : 70,815.84 = 13,935.28 : x
  2. Step 2: Convert to fraction form
    47,215.84/70,815.84 = 13,935.28/x
  3. Step 3: Cross multiply
    47,215.84x = 70,815.84 × 13,935.28
  4. Step 4: Simplify right side
    47,215.84x = 986,838,558.84
  5. Step 5: Solve for x
    x = 986,838,558.84/47,215.84
  6. Step 6: Final answer
    x = 20,900.58

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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.