Home / 13,428.23-18,522.75-7,973.60

Finding the Fourth Proportional to 13,428.23, 18,522.75 and 7,973.60

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Solution

The fourth proportional to 13,428.23, 18,522.75 and 7,973.60 is: 10,998.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.23 : 18,522.75 = 7,973.60 : x
  2. Step 2: Convert to fraction form
    13,428.23/18,522.75 = 7,973.60/x
  3. Step 3: Cross multiply
    13,428.23x = 18,522.75 × 7,973.60
  4. Step 4: Simplify right side
    13,428.23x = 147,693,040.23
  5. Step 5: Solve for x
    x = 147,693,040.23/13,428.23
  6. Step 6: Final answer
    x = 10,998.70

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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.