Home / 11,090.59-15,301.38-7,904.40

Finding the Fourth Proportional to 11,090.59, 15,301.38 and 7,904.40

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Solution

The fourth proportional to 11,090.59, 15,301.38 and 7,904.40 is: 10,905.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,090.59 : 15,301.38 = 7,904.40 : x
  2. Step 2: Convert to fraction form
    11,090.59/15,301.38 = 7,904.40/x
  3. Step 3: Cross multiply
    11,090.59x = 15,301.38 × 7,904.40
  4. Step 4: Simplify right side
    11,090.59x = 120,948,228.07
  5. Step 5: Solve for x
    x = 120,948,228.07/11,090.59
  6. Step 6: Final answer
    x = 10,905.48

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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.