Home / 18,312.36-25,270.38-9,928.68

Finding the Fourth Proportional to 18,312.36, 25,270.38 and 9,928.68

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Solution

The fourth proportional to 18,312.36, 25,270.38 and 9,928.68 is: 13,701.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.36 : 25,270.38 = 9,928.68 : x
  2. Step 2: Convert to fraction form
    18,312.36/25,270.38 = 9,928.68/x
  3. Step 3: Cross multiply
    18,312.36x = 25,270.38 × 9,928.68
  4. Step 4: Simplify right side
    18,312.36x = 250,901,516.50
  5. Step 5: Solve for x
    x = 250,901,516.50/18,312.36
  6. Step 6: Final answer
    x = 13,701.21

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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.