Home / 10,720.79-16,053.47-7,399.28

Finding the Fourth Proportional to 10,720.79, 16,053.47 and 7,399.28

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Solution

The fourth proportional to 10,720.79, 16,053.47 and 7,399.28 is: 11,079.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.79 : 16,053.47 = 7,399.28 : x
  2. Step 2: Convert to fraction form
    10,720.79/16,053.47 = 7,399.28/x
  3. Step 3: Cross multiply
    10,720.79x = 16,053.47 × 7,399.28
  4. Step 4: Simplify right side
    10,720.79x = 118,784,002.24
  5. Step 5: Solve for x
    x = 118,784,002.24/10,720.79
  6. Step 6: Final answer
    x = 11,079.79

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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.