Home / 18,420.36-25,412.52-12,834.60

Finding the Fourth Proportional to 18,420.36, 25,412.52 and 12,834.60

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Solution

The fourth proportional to 18,420.36, 25,412.52 and 12,834.60 is: 17,706.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.36 : 25,412.52 = 12,834.60 : x
  2. Step 2: Convert to fraction form
    18,420.36/25,412.52 = 12,834.60/x
  3. Step 3: Cross multiply
    18,420.36x = 25,412.52 × 12,834.60
  4. Step 4: Simplify right side
    18,420.36x = 326,159,529.19
  5. Step 5: Solve for x
    x = 326,159,529.19/18,420.36
  6. Step 6: Final answer
    x = 17,706.47

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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.