Home / 15,900.87-23,805.95-12,618.75

Finding the Fourth Proportional to 15,900.87, 23,805.95 and 12,618.75

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Solution

The fourth proportional to 15,900.87, 23,805.95 and 12,618.75 is: 18,892.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,900.87 : 23,805.95 = 12,618.75 : x
  2. Step 2: Convert to fraction form
    15,900.87/23,805.95 = 12,618.75/x
  3. Step 3: Cross multiply
    15,900.87x = 23,805.95 × 12,618.75
  4. Step 4: Simplify right side
    15,900.87x = 300,401,268.47
  5. Step 5: Solve for x
    x = 300,401,268.47/15,900.87
  6. Step 6: Final answer
    x = 18,892.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.