Home / 11,070.36-15,275.25-7,090.65

Finding the Fourth Proportional to 11,070.36, 15,275.25 and 7,090.65

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Solution

The fourth proportional to 11,070.36, 15,275.25 and 7,090.65 is: 9,783.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,070.36 : 15,275.25 = 7,090.65 : x
  2. Step 2: Convert to fraction form
    11,070.36/15,275.25 = 7,090.65/x
  3. Step 3: Cross multiply
    11,070.36x = 15,275.25 × 7,090.65
  4. Step 4: Simplify right side
    11,070.36x = 108,311,451.41
  5. Step 5: Solve for x
    x = 108,311,451.41/11,070.36
  6. Step 6: Final answer
    x = 9,783.91

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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.