Home / 11,154.47-15,390.75-6,436.02

Finding the Fourth Proportional to 11,154.47, 15,390.75 and 6,436.02

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Solution

The fourth proportional to 11,154.47, 15,390.75 and 6,436.02 is: 8,880.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,154.47 : 15,390.75 = 6,436.02 : x
  2. Step 2: Convert to fraction form
    11,154.47/15,390.75 = 6,436.02/x
  3. Step 3: Cross multiply
    11,154.47x = 15,390.75 × 6,436.02
  4. Step 4: Simplify right side
    11,154.47x = 99,055,174.82
  5. Step 5: Solve for x
    x = 99,055,174.82/11,154.47
  6. Step 6: Final answer
    x = 8,880.32

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1.5x scale

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.