Home / 18,302.45-25,257.47-9,918.95

Finding the Fourth Proportional to 18,302.45, 25,257.47 and 9,918.95

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Solution

The fourth proportional to 18,302.45, 25,257.47 and 9,918.95 is: 13,688.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,302.45 : 25,257.47 = 9,918.95 : x
  2. Step 2: Convert to fraction form
    18,302.45/25,257.47 = 9,918.95/x
  3. Step 3: Cross multiply
    18,302.45x = 25,257.47 × 9,918.95
  4. Step 4: Simplify right side
    18,302.45x = 250,527,406.17
  5. Step 5: Solve for x
    x = 250,527,406.17/18,302.45
  6. Step 6: Final answer
    x = 13,688.19

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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.