Home / 13,090.74-18,064.80-7,122.25

Finding the Fourth Proportional to 13,090.74, 18,064.80 and 7,122.25

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Solution

The fourth proportional to 13,090.74, 18,064.80 and 7,122.25 is: 9,828.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.74 : 18,064.80 = 7,122.25 : x
  2. Step 2: Convert to fraction form
    13,090.74/18,064.80 = 7,122.25/x
  3. Step 3: Cross multiply
    13,090.74x = 18,064.80 × 7,122.25
  4. Step 4: Simplify right side
    13,090.74x = 128,662,021.80
  5. Step 5: Solve for x
    x = 128,662,021.80/13,090.74
  6. Step 6: Final answer
    x = 9,828.48

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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.