Home / 13,090.11-18,064.53-7,122.03

Finding the Fourth Proportional to 13,090.11, 18,064.53 and 7,122.03

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Solution

The fourth proportional to 13,090.11, 18,064.53 and 7,122.03 is: 9,828.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.11 : 18,064.53 = 7,122.03 : x
  2. Step 2: Convert to fraction form
    13,090.11/18,064.53 = 7,122.03/x
  3. Step 3: Cross multiply
    13,090.11x = 18,064.53 × 7,122.03
  4. Step 4: Simplify right side
    13,090.11x = 128,656,124.60
  5. Step 5: Solve for x
    x = 128,656,124.60/13,090.11
  6. Step 6: Final answer
    x = 9,828.50

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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.