Home / 14,605.40-20,155.43-8,317.78

Finding the Fourth Proportional to 14,605.40, 20,155.43 and 8,317.78

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Solution

The fourth proportional to 14,605.40, 20,155.43 and 8,317.78 is: 11,478.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,605.40 : 20,155.43 = 8,317.78 : x
  2. Step 2: Convert to fraction form
    14,605.40/20,155.43 = 8,317.78/x
  3. Step 3: Cross multiply
    14,605.40x = 20,155.43 × 8,317.78
  4. Step 4: Simplify right side
    14,605.40x = 167,648,432.55
  5. Step 5: Solve for x
    x = 167,648,432.55/14,605.40
  6. Step 6: Final answer
    x = 11,478.52

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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.