Home / 18,665.40-25,758.60-10,281.90

Finding the Fourth Proportional to 18,665.40, 25,758.60 and 10,281.90

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Solution

The fourth proportional to 18,665.40, 25,758.60 and 10,281.90 is: 14,189.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.40 : 25,758.60 = 10,281.90 : x
  2. Step 2: Convert to fraction form
    18,665.40/25,758.60 = 10,281.90/x
  3. Step 3: Cross multiply
    18,665.40x = 25,758.60 × 10,281.90
  4. Step 4: Simplify right side
    18,665.40x = 264,847,349.34
  5. Step 5: Solve for x
    x = 264,847,349.34/18,665.40
  6. Step 6: Final answer
    x = 14,189.21

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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.