Home / 18,302.40-25,257.42-9,918.90

Finding the Fourth Proportional to 18,302.40, 25,257.42 and 9,918.90

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Solution

The fourth proportional to 18,302.40, 25,257.42 and 9,918.90 is: 13,688.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,302.40 : 25,257.42 = 9,918.90 : x
  2. Step 2: Convert to fraction form
    18,302.40/25,257.42 = 9,918.90/x
  3. Step 3: Cross multiply
    18,302.40x = 25,257.42 × 9,918.90
  4. Step 4: Simplify right side
    18,302.40x = 250,525,823.24
  5. Step 5: Solve for x
    x = 250,525,823.24/18,302.40
  6. Step 6: Final answer
    x = 13,688.14

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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.