Home / 13,384.12-20,088.50-6,815

Finding the Fourth Proportional to 13,384.12, 20,088.50 and 6,815

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Solution

The fourth proportional to 13,384.12, 20,088.50 and 6,815 is: 10,228.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.12 : 20,088.50 = 6,815 : x
  2. Step 2: Convert to fraction form
    13,384.12/20,088.50 = 6,815/x
  3. Step 3: Cross multiply
    13,384.12x = 20,088.50 × 6,815
  4. Step 4: Simplify right side
    13,384.12x = 136,903,127.50
  5. Step 5: Solve for x
    x = 136,903,127.50/13,384.12
  6. Step 6: Final answer
    x = 10,228.77

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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.