Home / 13,428.37-18,531.49-7,459.75

Finding the Fourth Proportional to 13,428.37, 18,531.49 and 7,459.75

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Solution

The fourth proportional to 13,428.37, 18,531.49 and 7,459.75 is: 10,294.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.37 : 18,531.49 = 7,459.75 : x
  2. Step 2: Convert to fraction form
    13,428.37/18,531.49 = 7,459.75/x
  3. Step 3: Cross multiply
    13,428.37x = 18,531.49 × 7,459.75
  4. Step 4: Simplify right side
    13,428.37x = 138,240,282.53
  5. Step 5: Solve for x
    x = 138,240,282.53/13,428.37
  6. Step 6: Final answer
    x = 10,294.64

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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.