Home / 18,355.55-25,331.40-10,397.30

Finding the Fourth Proportional to 18,355.55, 25,331.40 and 10,397.30

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Solution

The fourth proportional to 18,355.55, 25,331.40 and 10,397.30 is: 14,348.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,355.55 : 25,331.40 = 10,397.30 : x
  2. Step 2: Convert to fraction form
    18,355.55/25,331.40 = 10,397.30/x
  3. Step 3: Cross multiply
    18,355.55x = 25,331.40 × 10,397.30
  4. Step 4: Simplify right side
    18,355.55x = 263,378,038.56
  5. Step 5: Solve for x
    x = 263,378,038.56/18,355.55
  6. Step 6: Final answer
    x = 14,348.69

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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.