Home / 18,829.80-25,974-12,113.28

Finding the Fourth Proportional to 18,829.80, 25,974 and 12,113.28

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Solution

The fourth proportional to 18,829.80, 25,974 and 12,113.28 is: 16,709.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,829.80 : 25,974 = 12,113.28 : x
  2. Step 2: Convert to fraction form
    18,829.80/25,974 = 12,113.28/x
  3. Step 3: Cross multiply
    18,829.80x = 25,974 × 12,113.28
  4. Step 4: Simplify right side
    18,829.80x = 314,630,334.72
  5. Step 5: Solve for x
    x = 314,630,334.72/18,829.80
  6. Step 6: Final answer
    x = 16,709.17

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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.