Home / 14,130.57-21,167.60-8,505.15

Finding the Fourth Proportional to 14,130.57, 21,167.60 and 8,505.15

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Solution

The fourth proportional to 14,130.57, 21,167.60 and 8,505.15 is: 12,740.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,130.57 : 21,167.60 = 8,505.15 : x
  2. Step 2: Convert to fraction form
    14,130.57/21,167.60 = 8,505.15/x
  3. Step 3: Cross multiply
    14,130.57x = 21,167.60 × 8,505.15
  4. Step 4: Simplify right side
    14,130.57x = 180,033,610.30
  5. Step 5: Solve for x
    x = 180,033,610.30/14,130.57
  6. Step 6: Final answer
    x = 12,740.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.