Home / 11,153.54-15,387.49-6,436.91

Finding the Fourth Proportional to 11,153.54, 15,387.49 and 6,436.91

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Solution

The fourth proportional to 11,153.54, 15,387.49 and 6,436.91 is: 8,880.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.54 : 15,387.49 = 6,436.91 : x
  2. Step 2: Convert to fraction form
    11,153.54/15,387.49 = 6,436.91/x
  3. Step 3: Cross multiply
    11,153.54x = 15,387.49 × 6,436.91
  4. Step 4: Simplify right side
    11,153.54x = 99,047,888.26
  5. Step 5: Solve for x
    x = 99,047,888.26/11,153.54
  6. Step 6: Final answer
    x = 8,880.40

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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.