Home / 13,918.84-20,878.32-4,691.32

Finding the Fourth Proportional to 13,918.84, 20,878.32 and 4,691.32

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Solution

The fourth proportional to 13,918.84, 20,878.32 and 4,691.32 is: 7,037.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.84 : 20,878.32 = 4,691.32 : x
  2. Step 2: Convert to fraction form
    13,918.84/20,878.32 = 4,691.32/x
  3. Step 3: Cross multiply
    13,918.84x = 20,878.32 × 4,691.32
  4. Step 4: Simplify right side
    13,918.84x = 97,946,880.18
  5. Step 5: Solve for x
    x = 97,946,880.18/13,918.84
  6. Step 6: Final answer
    x = 7,037.00

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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.