Home / 13,090.55-18,065.04-7,122.26

Finding the Fourth Proportional to 13,090.55, 18,065.04 and 7,122.26

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Solution

The fourth proportional to 13,090.55, 18,065.04 and 7,122.26 is: 9,828.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.55 : 18,065.04 = 7,122.26 : x
  2. Step 2: Convert to fraction form
    13,090.55/18,065.04 = 7,122.26/x
  3. Step 3: Cross multiply
    13,090.55x = 18,065.04 × 7,122.26
  4. Step 4: Simplify right side
    13,090.55x = 128,663,948.05
  5. Step 5: Solve for x
    x = 128,663,948.05/13,090.55
  6. Step 6: Final answer
    x = 9,828.77

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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.