Home / 13,090.12-18,064.85-7,502.20

Finding the Fourth Proportional to 13,090.12, 18,064.85 and 7,502.20

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Solution

The fourth proportional to 13,090.12, 18,064.85 and 7,502.20 is: 10,353.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.12 : 18,064.85 = 7,502.20 : x
  2. Step 2: Convert to fraction form
    13,090.12/18,064.85 = 7,502.20/x
  3. Step 3: Cross multiply
    13,090.12x = 18,064.85 × 7,502.20
  4. Step 4: Simplify right side
    13,090.12x = 135,526,117.67
  5. Step 5: Solve for x
    x = 135,526,117.67/13,090.12
  6. Step 6: Final answer
    x = 10,353.31

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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.