Home / 11,721.27-17,569.76-7,328.64

Finding the Fourth Proportional to 11,721.27, 17,569.76 and 7,328.64

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Solution

The fourth proportional to 11,721.27, 17,569.76 and 7,328.64 is: 10,985.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.27 : 17,569.76 = 7,328.64 : x
  2. Step 2: Convert to fraction form
    11,721.27/17,569.76 = 7,328.64/x
  3. Step 3: Cross multiply
    11,721.27x = 17,569.76 × 7,328.64
  4. Step 4: Simplify right side
    11,721.27x = 128,762,409.28
  5. Step 5: Solve for x
    x = 128,762,409.28/11,721.27
  6. Step 6: Final answer
    x = 10,985.36

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1.5x scale

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.