Home / 14,127.52-19,496.64-7,840

Finding the Fourth Proportional to 14,127.52, 19,496.64 and 7,840

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Solution

The fourth proportional to 14,127.52, 19,496.64 and 7,840 is: 10,819.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,127.52 : 19,496.64 = 7,840 : x
  2. Step 2: Convert to fraction form
    14,127.52/19,496.64 = 7,840/x
  3. Step 3: Cross multiply
    14,127.52x = 19,496.64 × 7,840
  4. Step 4: Simplify right side
    14,127.52x = 152,853,657.60
  5. Step 5: Solve for x
    x = 152,853,657.60/14,127.52
  6. Step 6: Final answer
    x = 10,819.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.