Home / 11,399.08-15,730.88-6,681.64

Finding the Fourth Proportional to 11,399.08, 15,730.88 and 6,681.64

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Solution

The fourth proportional to 11,399.08, 15,730.88 and 6,681.64 is: 9,220.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,399.08 : 15,730.88 = 6,681.64 : x
  2. Step 2: Convert to fraction form
    11,399.08/15,730.88 = 6,681.64/x
  3. Step 3: Cross multiply
    11,399.08x = 15,730.88 × 6,681.64
  4. Step 4: Simplify right side
    11,399.08x = 105,108,077.04
  5. Step 5: Solve for x
    x = 105,108,077.04/11,399.08
  6. Step 6: Final answer
    x = 9,220.75

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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.